8/7 plus what equals 2/1?

Here we will show you how to calculate "what" in this sentence: "8/7 plus what equals 2/1?" We start by making this word problem into an algebraic equation where "what" is the variable "x".

8/7 + x = 2/1

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 8/7 on both sides like this:

8/7 - 8/7 + x = 2/1 - 8/7

8/7 - 8/7 + x leaves x and 2/1 - 8/7 is 6/7 which means we end up with x = 6/7. Therefore, the answer to "8/7 plus what equals 2/1?" is as follows:

6/7

It is always good to double-check your math to make sure you did it right. When we entered 6/7 for x in this equation 8/7 + x = 2/1, we get the following true equation which means our math is correct.

8/7 + 6/7 = 2/1

Fraction Plus What Equals Fraction Calculator
Here you can submit another "a/b plus what equals c/d?" word problem that we can solve with basic algebra.

8/7 plus what equals 2/2?
Go here for the next word problem that we have tackled with math.