4-+21=7x-12

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Solution for 4-+21=7x-12 equation:



4-+21=7x-12
We move all terms to the left:
4-+21-(7x-12)=0
We add all the numbers together, and all the variables
-(7x-12)=0
We get rid of parentheses
-7x+12=0
We move all terms containing x to the left, all other terms to the right
-7x=-12
x=-12/-7
x=1+5/7

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