1/8 minus what equals 2/9?

Here we will show you how to calculate "what" in this sentence: "1/8 minus what equals 2/9?" We start by making this word problem into an algebraic equation where "what" is the variable "x".

1/8 - x = 2/9

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 1/8 on both sides like this:

1/8 - 1/8 - x = 2/9 - 1/8

1/8 - 1/8 - x leaves -x and 2/9 - 1/8 is 7/72 which means we end up with -x = 7/72. Then, you multiply each side by -1 to get x = -7/72. Therefore, the answer to "1/8 minus what equals 2/9?" is as follows:

-7/72

It is always good to double-check your math to make sure you did it right. When we entered -7/72 for x in this equation 1/8 - x = 2/9, we get the following true equation which means our math is correct.

1/8 - -7/72 = 2/9

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