12y+20=9y-10

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Solution for 12y+20=9y-10 equation:


Simplifying
12y + 20 = 9y + -10

Reorder the terms:
20 + 12y = 9y + -10

Reorder the terms:
20 + 12y = -10 + 9y

Solving
20 + 12y = -10 + 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
20 + 12y + -9y = -10 + 9y + -9y

Combine like terms: 12y + -9y = 3y
20 + 3y = -10 + 9y + -9y

Combine like terms: 9y + -9y = 0
20 + 3y = -10 + 0
20 + 3y = -10

Add '-20' to each side of the equation.
20 + -20 + 3y = -10 + -20

Combine like terms: 20 + -20 = 0
0 + 3y = -10 + -20
3y = -10 + -20

Combine like terms: -10 + -20 = -30
3y = -30

Divide each side by '3'.
y = -10

Simplifying
y = -10

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