90-9y+6y=180

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Solution for 90-9y+6y=180 equation: 


Simplifying
90 + -9y + 6y = 180

Combine like terms: -9y + 6y = -3y
90 + -3y = 180

Solving
90 + -3y = 180

Solving for variable 'y'.

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

Add '-90' to each side of the equation.
90 + -90 + -3y = 180 + -90

Combine like terms: 90 + -90 = 0
0 + -3y = 180 + -90
-3y = 180 + -90

Combine like terms: 180 + -90 = 90
-3y = 90

Divide each side by '-3'.
y = -30

Simplifying
y = -30

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