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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