180=(12y-5)+(15y-4)

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Solution for 180=(12y-5)+(15y-4) equation:


Simplifying
180 = (12y + -5) + (15y + -4)

Reorder the terms:
180 = (-5 + 12y) + (15y + -4)

Remove parenthesis around (-5 + 12y)
180 = -5 + 12y + (15y + -4)

Reorder the terms:
180 = -5 + 12y + (-4 + 15y)

Remove parenthesis around (-4 + 15y)
180 = -5 + 12y + -4 + 15y

Reorder the terms:
180 = -5 + -4 + 12y + 15y

Combine like terms: -5 + -4 = -9
180 = -9 + 12y + 15y

Combine like terms: 12y + 15y = 27y
180 = -9 + 27y

Solving
180 = -9 + 27y

Solving for variable 'y'.

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

Add '-27y' to each side of the equation.
180 + -27y = -9 + 27y + -27y

Combine like terms: 27y + -27y = 0
180 + -27y = -9 + 0
180 + -27y = -9

Add '-180' to each side of the equation.
180 + -180 + -27y = -9 + -180

Combine like terms: 180 + -180 = 0
0 + -27y = -9 + -180
-27y = -9 + -180

Combine like terms: -9 + -180 = -189
-27y = -189

Divide each side by '-27'.
y = 7

Simplifying
y = 7

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