What Does A Positive Plus A Negative Equal?

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..

How do you add and subtract negative fractions with different denominators?

Find the sum. The LCM of 5 and 3 is 15 . To add the fractions with unlike denominators, rename the fractions with a common denominator. Since the denominators are the same, add the numerators.

Why do 2 negatives make a positive?

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

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.

What is the rule for adding and subtracting integers?

To add integers having the same sign, keep the same sign and add the absolute value of each number. To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest. Subtract an integer by adding its opposite.

What happens when you add a negative and a positive?

When you are adding a negative number to a positive number you are effectively subtracting the second number from the first. … And then you add the negative number, which means you are moving to the left – in the negative direction. Basically you are subtracting the 2. The answer is 2.

What happens when you subtract a negative from a positive?

Rule 4: Subtracting a negative number from a positive number—when you see the subtraction (minus) sign followed by a negative sign, turn the two signs into a plus sign. Thus, instead of subtracting a negative, you’re adding a positive, so you have a simple addition problem.

What does a negative fraction mean?

– The negative of a number can be created by multiplying the number by negative one. … These principles apply to fractions as well, so: Placing the negative sign before the entire fraction (subtracting the fraction) is equivalent to adding the same fraction, but with a negative numerator.

Do 2 negatives make a positive when subtracting?

If you subtract a negative number, the two negatives combine to make a positive.

What is a negative times a positive?

Rule 2: A negative number times a positive number equals a negative number. When you multiply a negative number to a positive number, your answer is a negative number. It doesn’t matter which order the positive and negative numbers are in that you are multiplying, the answer is always a negative number.

What is the rule for subtracting negative numbers?

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. For example, say we have the problem -2 – –4.

What is the rule for adding and subtracting positive and 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 is the rule for adding and subtracting fractions?

To add or subtract fractions they must have the same denominator (the bottom value). If the denominators are already the same then it is just a matter of either adding or subtracting the numerators (the top value). If the denominators are different then a common denominator needs to be found.