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1+27=-4(9x-7)
We move all terms to the left:
1+27-(-4(9x-7))=0
We add all the numbers together, and all the variables
-(-4(9x-7))+28=0
We calculate terms in parentheses: -(-4(9x-7)), so:We get rid of parentheses
-4(9x-7)
We multiply parentheses
-36x+28
Back to the equation:
-(-36x+28)
36x-28+28=0
We add all the numbers together, and all the variables
36x=0
x=0/36
x=0
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