31+4y-8=15y-12-4y

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Solution for 31+4y-8=15y-12-4y equation: 


Simplifying
31 + 4y + -8 = 15y + -12 + -4y

Reorder the terms:
31 + -8 + 4y = 15y + -12 + -4y

Combine like terms: 31 + -8 = 23
23 + 4y = 15y + -12 + -4y

Reorder the terms:
23 + 4y = -12 + 15y + -4y

Combine like terms: 15y + -4y = 11y
23 + 4y = -12 + 11y

Solving
23 + 4y = -12 + 11y

Solving for variable 'y'.

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

Add '-11y' to each side of the equation.
23 + 4y + -11y = -12 + 11y + -11y

Combine like terms: 4y + -11y = -7y
23 + -7y = -12 + 11y + -11y

Combine like terms: 11y + -11y = 0
23 + -7y = -12 + 0
23 + -7y = -12

Add '-23' to each side of the equation.
23 + -23 + -7y = -12 + -23

Combine like terms: 23 + -23 = 0
0 + -7y = -12 + -23
-7y = -12 + -23

Combine like terms: -12 + -23 = -35
-7y = -35

Divide each side by '-7'.
y = 5

Simplifying
y = 5

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