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5+31=-4(7y-9)
We move all terms to the left:
5+31-(-4(7y-9))=0
We add all the numbers together, and all the variables
-(-4(7y-9))+36=0
We calculate terms in parentheses: -(-4(7y-9)), so:We get rid of parentheses
-4(7y-9)
We multiply parentheses
-28y+36
Back to the equation:
-(-28y+36)
28y-36+36=0
We add all the numbers together, and all the variables
28y=0
y=0/28
y=0
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