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-7=2(15-7x)+5
We move all terms to the left:
-7-(2(15-7x)+5)=0
We add all the numbers together, and all the variables
-(2(-7x+15)+5)-7=0
We calculate terms in parentheses: -(2(-7x+15)+5), so:We get rid of parentheses
2(-7x+15)+5
We multiply parentheses
-14x+30+5
We add all the numbers together, and all the variables
-14x+35
Back to the equation:
-(-14x+35)
14x-35-7=0
We add all the numbers together, and all the variables
14x-42=0
We move all terms containing x to the left, all other terms to the right
14x=42
x=42/14
x=3
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