12y+4=9y-5

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Solution for 12y+4=9y-5 equation:


Simplifying
12y + 4 = 9y + -5

Reorder the terms:
4 + 12y = 9y + -5

Reorder the terms:
4 + 12y = -5 + 9y

Solving
4 + 12y = -5 + 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.
4 + 12y + -9y = -5 + 9y + -9y

Combine like terms: 12y + -9y = 3y
4 + 3y = -5 + 9y + -9y

Combine like terms: 9y + -9y = 0
4 + 3y = -5 + 0
4 + 3y = -5

Add '-4' to each side of the equation.
4 + -4 + 3y = -5 + -4

Combine like terms: 4 + -4 = 0
0 + 3y = -5 + -4
3y = -5 + -4

Combine like terms: -5 + -4 = -9
3y = -9

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

Simplifying
y = -3

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