4/7 minus what equals 4/9?

Here we will show you how to calculate "what" in this sentence: "4/7 minus what equals 4/9?" We start by making this word problem into an algebraic equation where "what" is the variable "x".

4/7 - x = 4/9

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 4/7 on both sides like this:

4/7 - 4/7 - x = 4/9 - 4/7

4/7 - 4/7 - x leaves -x and 4/9 - 4/7 is -8/63 which means we end up with -x = -8/63. Then, you multiply each side by -1 to get x = 8/63. Therefore, the answer to "4/7 minus what equals 4/9?" is as follows:

8/63

It is always good to double-check your math to make sure you did it right. When we entered 8/63 for x in this equation 4/7 - x = 4/9, we get the following true equation which means our math is correct.

4/7 - 8/63 = 4/9

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