3/4 plus what equals 5/7?

Here we will show you how to calculate "what" in this sentence: "3/4 plus what equals 5/7?" We start by making this word problem into an algebraic equation where "what" is the variable "x".

3/4 + x = 5/7

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 3/4 on both sides like this:

3/4 - 3/4 + x = 5/7 - 3/4

3/4 - 3/4 + x leaves x and 5/7 - 3/4 is -1/28 which means we end up with x = -1/28. Therefore, the answer to "3/4 plus what equals 5/7?" is as follows:

-1/28

It is always good to double-check your math to make sure you did it right. When we entered -1/28 for x in this equation 3/4 + x = 5/7, we get the following true equation which means our math is correct.

3/4 + -1/28 = 5/7

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