9y-30+15y-9y+45=120

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Solution for 9y-30+15y-9y+45=120 equation:


Simplifying
9y + -30 + 15y + -9y + 45 = 120

Reorder the terms:
-30 + 45 + 9y + 15y + -9y = 120

Combine like terms: -30 + 45 = 15
15 + 9y + 15y + -9y = 120

Combine like terms: 9y + 15y = 24y
15 + 24y + -9y = 120

Combine like terms: 24y + -9y = 15y
15 + 15y = 120

Solving
15 + 15y = 120

Solving for variable 'y'.

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

Add '-15' to each side of the equation.
15 + -15 + 15y = 120 + -15

Combine like terms: 15 + -15 = 0
0 + 15y = 120 + -15
15y = 120 + -15

Combine like terms: 120 + -15 = 105
15y = 105

Divide each side by '15'.
y = 7

Simplifying
y = 7

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