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13=7x-30/12
We move all terms to the left:
13-(7x-30/12)=0
We add all the numbers together, and all the variables
-(+7x-30/12)+13=0
We get rid of parentheses
-7x+13+30/12=0
We multiply all the terms by the denominator
-7x*12+30+13*12=0
We add all the numbers together, and all the variables
-7x*12+186=0
Wy multiply elements
-84x+186=0
We move all terms containing x to the left, all other terms to the right
-84x=-186
x=-186/-84
x=2+3/14
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