-7y-12=9y-15-13y

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Solution for -7y-12=9y-15-13y equation:


Simplifying
-7y + -12 = 9y + -15 + -13y

Reorder the terms:
-12 + -7y = 9y + -15 + -13y

Reorder the terms:
-12 + -7y = -15 + 9y + -13y

Combine like terms: 9y + -13y = -4y
-12 + -7y = -15 + -4y

Solving
-12 + -7y = -15 + -4y

Solving for variable 'y'.

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

Add '4y' to each side of the equation.
-12 + -7y + 4y = -15 + -4y + 4y

Combine like terms: -7y + 4y = -3y
-12 + -3y = -15 + -4y + 4y

Combine like terms: -4y + 4y = 0
-12 + -3y = -15 + 0
-12 + -3y = -15

Add '12' to each side of the equation.
-12 + 12 + -3y = -15 + 12

Combine like terms: -12 + 12 = 0
0 + -3y = -15 + 12
-3y = -15 + 12

Combine like terms: -15 + 12 = -3
-3y = -3

Divide each side by '-3'.
y = 1

Simplifying
y = 1

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