15(12+-0.4y)-7=180

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Solution for 15(12+-0.4y)-7=180 equation: 


Simplifying
15(12 + -0.4y) + -7 = 180
(12 * 15 + -0.4y * 15) + -7 = 180
(180 + -6y) + -7 = 180

Reorder the terms:
180 + -7 + -6y = 180

Combine like terms: 180 + -7 = 173
173 + -6y = 180

Solving
173 + -6y = 180

Solving for variable 'y'.

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

Add '-173' to each side of the equation.
173 + -173 + -6y = 180 + -173

Combine like terms: 173 + -173 = 0
0 + -6y = 180 + -173
-6y = 180 + -173

Combine like terms: 180 + -173 = 7
-6y = 7

Divide each side by '-6'.
y = -1.166666667

Simplifying
y = -1.166666667

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