-7y+1=-9(y-1)

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Solution for -7y+1=-9(y-1) equation:



-7y+1=-9(y-1)
We move all terms to the left:
-7y+1-(-9(y-1))=0
We calculate terms in parentheses: -(-9(y-1)), so:
-9(y-1)
We multiply parentheses
-9y+9
Back to the equation:
-(-9y+9)
We get rid of parentheses
-7y+9y-9+1=0
We add all the numbers together, and all the variables
2y-8=0
We move all terms containing y to the left, all other terms to the right
2y=8
y=8/2
y=4

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