5/9 plus what equals 2/7?

Here we will show you how to calculate "what" in this sentence: "5/9 plus what equals 2/7?" We start by making this word problem into an algebraic equation where "what" is the variable "x".

5/9 + x = 2/7

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 5/9 on both sides like this:

5/9 - 5/9 + x = 2/7 - 5/9

5/9 - 5/9 + x leaves x and 2/7 - 5/9 is -17/63 which means we end up with x = -17/63. Therefore, the answer to "5/9 plus what equals 2/7?" is as follows:

-17/63

It is always good to double-check your math to make sure you did it right. When we entered -17/63 for x in this equation 5/9 + x = 2/7, we get the following true equation which means our math is correct.

5/9 + -17/63 = 2/7

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