4/9 minus what equals 2/1?

Here we will show you how to calculate "what" in this sentence: "4/9 minus what equals 2/1?" We start by making this word problem into an algebraic equation where "what" is the variable "x".

4/9 - x = 2/1

To solve this equation, we want x alone on the left side of the equation so we start by subtracting 4/9 on both sides like this:

4/9 - 4/9 - x = 2/1 - 4/9

4/9 - 4/9 - x leaves -x and 2/1 - 4/9 is 1 5/9 which means we end up with -x = 1 5/9. Then, you multiply each side by -1 to get x = -1 5/9. Therefore, the answer to "4/9 minus what equals 2/1?" is as follows:

-1 5/9

It is always good to double-check your math to make sure you did it right. When we entered -1 5/9 for x in this equation 4/9 - x = 2/1, we get the following true equation which means our math is correct.

4/9 - -1 5/9 = 2/1

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