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4=-7x+4(1+2x)
We move all terms to the left:
4-(-7x+4(1+2x))=0
We add all the numbers together, and all the variables
-(-7x+4(2x+1))+4=0
We calculate terms in parentheses: -(-7x+4(2x+1)), so:We get rid of parentheses
-7x+4(2x+1)
We multiply parentheses
-7x+8x+4
We add all the numbers together, and all the variables
x+4
Back to the equation:
-(x+4)
-x-4+4=0
We add all the numbers together, and all the variables
-x=0
x=0/-1
x=0
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