8/9 plus what equals 9/8?

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

8/9 + x = 9/8

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 8/9 on both sides like this:

8/9 - 8/9 + x = 9/8 - 8/9

8/9 - 8/9 + x leaves x and 9/8 - 8/9 is 17/72 which means we end up with x = 17/72. Therefore, the answer to "8/9 plus what equals 9/8?" is as follows:

17/72

It is always good to double-check your math to make sure you did it right. When we entered 17/72 for x in this equation 8/9 + x = 9/8, we get the following true equation which means our math is correct.

8/9 + 17/72 = 9/8

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