8/7 minus what equals 8/9?

Here we will show you how to calculate "what" in this sentence: "8/7 minus what equals 8/9?" We start by making this word problem into an algebraic equation where "what" is the variable "x".

8/7 - x = 8/9

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 8/7 on both sides like this:

8/7 - 8/7 - x = 8/9 - 8/7

8/7 - 8/7 - x leaves -x and 8/9 - 8/7 is -16/63 which means we end up with -x = -16/63. Then, you multiply each side by -1 to get x = 16/63. Therefore, the answer to "8/7 minus what equals 8/9?" is as follows:

16/63

It is always good to double-check your math to make sure you did it right. When we entered 16/63 for x in this equation 8/7 - x = 8/9, we get the following true equation which means our math is correct.

8/7 - 16/63 = 8/9

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