1/8 plus what equals 1/2?

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

1/8 + x = 1/2

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 = 1/2 - 1/8

1/8 - 1/8 + x leaves x and 1/2 - 1/8 is 3/8 which means we end up with x = 3/8. Therefore, the answer to "1/8 plus what equals 1/2?" is as follows:

3/8

It is always good to double-check your math to make sure you did it right. When we entered 3/8 for x in this equation 1/8 + x = 1/2, we get the following true equation which means our math is correct.

1/8 + 3/8 = 1/2

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