4y-12=9y+13

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Solution for 4y-12=9y+13 equation:


Simplifying
4y + -12 = 9y + 13

Reorder the terms:
-12 + 4y = 9y + 13

Reorder the terms:
-12 + 4y = 13 + 9y

Solving
-12 + 4y = 13 + 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.
-12 + 4y + -9y = 13 + 9y + -9y

Combine like terms: 4y + -9y = -5y
-12 + -5y = 13 + 9y + -9y

Combine like terms: 9y + -9y = 0
-12 + -5y = 13 + 0
-12 + -5y = 13

Add '12' to each side of the equation.
-12 + 12 + -5y = 13 + 12

Combine like terms: -12 + 12 = 0
0 + -5y = 13 + 12
-5y = 13 + 12

Combine like terms: 13 + 12 = 25
-5y = 25

Divide each side by '-5'.
y = -5

Simplifying
y = -5

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