What plus 5/7 equals 4/5?

Here we will show you how to calculate "what" in this sentence: "What plus 5/7 equals 4/5?" We start by making this word problem into an algebraic equation where "what" is the variable "x".

x + 5/7 = 4/5

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 5/7 on both sides like this:

x + 5/7 - 5/7 = 4/5 - 5/7

x + 5/7 - 5/7 leaves x and 4/5 - 5/7 is 3/35 which means we end up with x = 3/35. Therefore, the answer to "What plus 5/7 equals 4/5?" is as follows:

3/35

It is always good to double-check your math to make sure you did it right. When we entered 3/35 for x in this equation x + 5/7 = 4/5, we get the following true equation which means our math is correct.

3/35 + 5/7 = 4/5

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