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(7/3)-21=2x
We move all terms to the left:
(7/3)-21-(2x)=0
We add all the numbers together, and all the variables
-2x-21+(+7/3)=0
We get rid of parentheses
-2x-21+7/3=0
We multiply all the terms by the denominator
-2x*3+7-21*3=0
We add all the numbers together, and all the variables
-2x*3-56=0
Wy multiply elements
-6x-56=0
We move all terms containing x to the left, all other terms to the right
-6x=56
x=56/-6
x=-9+1/3
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