Quick Answer: What Happens When You Subtract A Negative From A Negative?

What does a negative over a negative equal?

Rule 3: a negative number divided by a negative number equals a positive number.

Two negatives make a positive, so a negative number divided by a negative number equals a positive number..

How do you subtract positive and negative integers?

To subtract integers, change the sign on the integer that is to be subtracted. If both signs are positive, the answer will be positive. If both signs are negative, the answer will be negative. If the signs are different subtract the smaller absolute value from the larger absolute value.

Why negative plus negative equals positive?

When you multiply a negative by a negative you get a positive, because the two negative signs are cancelled out.

What are the rules for negative and positive numbers?

The Rules:RuleExample+(+)Two like signs become a positive sign3+(+2) = 3 + 2 = 5−(−)6−(−3) = 6 + 3 = 9+(−)Two unlike signs become a negative sign7+(−2) = 7 − 2 = 5−(+)8−(+2) = 8 − 2 = 62 more rows

Why does minus and minus equal plus?

The answer has to do with the fundamental properties of operations on numbers (the notions of “addition”, “subtraction”, “multiplication”, and “division”). … Each number has an “additive inverse” associated to it (a sort of “opposite” number), which when added to the original number gives zero.

Why does my calculator say a negative squared is negative?

Why do all calculators return a negative answer when you square a negative number? the answer is you might not be putting the negative number in parentheses. for example, if you say -3^2, the calculator reads that as -(3)^2, which is -9.

What happens when you add a negative by a negative?

When you are adding a negative number to a negative number, it becomes subtraction, where you start from a negative point on the numbers line and move left. … You need to ignore the plus sign and recognize that the second negative means you are subtracting that number. We’re starting at -3. Then we subtract 2.

How do you subtract a negative from a negative?

Rule 3: Subtracting a negative number from a negative number – a minus sign followed by a negative sign, turns the two signs into a plus sign. So, instead of subtracting a negative, you are adding a positive. Basically, – (-4) becomes +4, and then you add the numbers.

What is the rule for adding and subtracting integers?

When a positive and a negative integer are added, the numbers are subtracted without signs and the answer is assigned the sign of the larger integer. For example, to add 10 + (-15) = -5, the larger number in this case is 15 without the sign.

Why do two minuses make a plus?

If a number is positive, the + is usually missed out before the number. So 3 is really (+3). Adding and multiplying combinations of positive and negative numbers can cause confusion and so care must be taken. Two ‘pluses’ make a plus, two ‘minuses’ make a plus.

Why when you subtract a negative is positive?

Subtracting a number is the same as adding its opposite. So, subtracting a positive number is like adding a negative; you move to the left on the number line. Subtracting a negative number is like adding a positive; you move to the right on the number line.

What is the rule for adding and subtracting negative numbers?

When adding positive numbers, count to the right. When adding negative numbers, count to the left. When subtracting positive numbers, count to the left. When subtracting negative numbers, count to the right.

What does a negative and positive equal?

When you have two negative signs, one turns over, and they add together to make a positive. If you have a positive and a negative, there is one dash left over, and the answer is negative.

How do you prove negative times negative is a positive?

We can represent “removes” by a negative number and figure out the answer by multiplying. This is an illustration of a negative times a negative resulting in a positive. If one thinks of multiplication as grouping, then we have made a positive group by taking away a negative number twelve times.

What happens when you times a negative by a positive?

When you multiply a negative number by a positive number then the product is always negative. … When you multiply two negative numbers or two positive numbers then the product is always positive.

What is the rule for adding subtracting multiplying and dividing?

Over time, mathematicians have developed a set of rules called the order of operations to determine which operation to do first. The rules are: Multiply and divide from left to right. Add and subtract from left to right.