1/3 minus what equals 3/7?
Here we will show you how to calculate "what" in this sentence: "1/3 minus what equals 3/7?" We start by making this word problem into an algebraic equation where "what" is the variable "x".
1/3 - x = 3/7
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 = 3/7 - 1/3
1/3 - 1/3 - x leaves -x and 3/7 - 1/3 is 2/21 which means we end up with -x = 2/21. Then, you multiply each side by -1 to get x = -2/21. Therefore, the answer to "1/3 minus what equals 3/7?" is as follows:
-2/21
It is always good to double-check your math to make sure you did it right. When we entered -2/21 for x in this equation 1/3 - x = 3/7, we get the following true equation which means our math is correct.
1/3 - -2/21 = 3/7
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