10(y-3)=-10(y+9)

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Solution for 10(y-3)=-10(y+9) equation:



10(y-3)=-10(y+9)
We move all terms to the left:
10(y-3)-(-10(y+9))=0
We multiply parentheses
10y-(-10(y+9))-30=0
We calculate terms in parentheses: -(-10(y+9)), so:
-10(y+9)
We multiply parentheses
-10y-90
Back to the equation:
-(-10y-90)
We get rid of parentheses
10y+10y+90-30=0
We add all the numbers together, and all the variables
20y+60=0
We move all terms containing y to the left, all other terms to the right
20y=-60
y=-60/20
y=-3

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