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-19=-7y+4(y+2)
We move all terms to the left:
-19-(-7y+4(y+2))=0
We calculate terms in parentheses: -(-7y+4(y+2)), so:We get rid of parentheses
-7y+4(y+2)
We multiply parentheses
-7y+4y+8
We add all the numbers together, and all the variables
-3y+8
Back to the equation:
-(-3y+8)
3y-8-19=0
We add all the numbers together, and all the variables
3y-27=0
We move all terms containing y to the left, all other terms to the right
3y=27
y=27/3
y=9
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