1/6 plus what equals 2/5?

Here we will show you how to calculate "what" in this sentence: "1/6 plus what equals 2/5?" We start by making this word problem into an algebraic equation where "what" is the variable "x".

1/6 + x = 2/5

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 1/6 on both sides like this:

1/6 - 1/6 + x = 2/5 - 1/6

1/6 - 1/6 + x leaves x and 2/5 - 1/6 is 7/30 which means we end up with x = 7/30. Therefore, the answer to "1/6 plus what equals 2/5?" is as follows:

7/30

It is always good to double-check your math to make sure you did it right. When we entered 7/30 for x in this equation 1/6 + x = 2/5, we get the following true equation which means our math is correct.

1/6 + 7/30 = 2/5

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