20=-8y+4(y+4)

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Solution for 20=-8y+4(y+4) equation:



20=-8y+4(y+4)
We move all terms to the left:
20-(-8y+4(y+4))=0
We calculate terms in parentheses: -(-8y+4(y+4)), so:
-8y+4(y+4)
We multiply parentheses
-8y+4y+16
We add all the numbers together, and all the variables
-4y+16
Back to the equation:
-(-4y+16)
We get rid of parentheses
4y-16+20=0
We add all the numbers together, and all the variables
4y+4=0
We move all terms containing y to the left, all other terms to the right
4y=-4
y=-4/4
y=-1

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