7y-4(3y-5)=80

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Solution for 7y-4(3y-5)=80 equation: 


Simplifying
7y + -4(3y + -5) = 80

Reorder the terms:
7y + -4(-5 + 3y) = 80
7y + (-5 * -4 + 3y * -4) = 80
7y + (20 + -12y) = 80

Reorder the terms:
20 + 7y + -12y = 80

Combine like terms: 7y + -12y = -5y
20 + -5y = 80

Solving
20 + -5y = 80

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-20' to each side of the equation.
20 + -20 + -5y = 80 + -20

Combine like terms: 20 + -20 = 0
0 + -5y = 80 + -20
-5y = 80 + -20

Combine like terms: 80 + -20 = 60
-5y = 60

Divide each side by '-5'.
y = -12

Simplifying
y = -12

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