1/3 plus what equals 2/1?

Here we will show you how to calculate "what" in this sentence: "1/3 plus what equals 2/1?" We start by making this word problem into an algebraic equation where "what" is the variable "x".

1/3 + x = 2/1

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 1/3 on both sides like this:

1/3 - 1/3 + x = 2/1 - 1/3

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

1 2/3

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

1/3 + 1 2/3 = 2/1

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