GRE Math : How to divide negative numbers

Study concepts, example questions & explanations for GRE Math

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Example Questions

Example Question #1 :How To Divide Negative Numbers

Find the value of.

Possible Answers:

Correct answer:

Explanation:

To solve for, divide each side of the equation by -2.

is the same as

which is POSITIVE

Example Question #1 :How To Divide Negative Numbers

What is?

Possible Answers:

45

Correct answer:

Explanation:

A negative number divided by a negative number always results in a positive number.divided byequals. Since the answer is positive, the answer cannot beor any other negative number.

Example Question #11 :Negative Numbers

Solve for:

Possible Answers:

Correct answer:

Explanation:

Begin by isolating your variable.

Subtractfrom both sides:

, or

Next, subtractfrom both sides:

, or

Then, divide both sides by:

Recall that division of a negative by a negative gives you a positive, therefore:

or

Example Question #3 :Negative Numbers

Solve for:

Possible Answers:

Correct answer:

Explanation:

To solve this equation, you need to isolate the variable on one side. We can accomplish this by dividing byon both sides:

只要你把,如果是迹象the same (i.e. two positive, or two negative), you'll get a positive result. If the signs are opposites (i.e. one positive, one negative) then you get a negative.

Both of the numbers here are negative, so we will have a positive result:

Example Question #2 :Negative Numbers

Solve for:

Possible Answers:

Correct answer:

Explanation:

To solve, you need to isolate the variable. We first subtractthen divide by:

When dividing, if the signs of the numbers are the same (i.e. both positive, or both negative), you yield a positive result. If the signs of the numbers are opposites (i.e. one of each), then you yield a negative result.

Therefore:

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