8y-4+5y+7=y+31

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Solution for 8y-4+5y+7=y+31 equation:


Simplifying
8y + -4 + 5y + 7 = y + 31

Reorder the terms:
-4 + 7 + 8y + 5y = y + 31

Combine like terms: -4 + 7 = 3
3 + 8y + 5y = y + 31

Combine like terms: 8y + 5y = 13y
3 + 13y = y + 31

Reorder the terms:
3 + 13y = 31 + y

Solving
3 + 13y = 31 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
3 + 13y + -1y = 31 + y + -1y

Combine like terms: 13y + -1y = 12y
3 + 12y = 31 + y + -1y

Combine like terms: y + -1y = 0
3 + 12y = 31 + 0
3 + 12y = 31

Add '-3' to each side of the equation.
3 + -3 + 12y = 31 + -3

Combine like terms: 3 + -3 = 0
0 + 12y = 31 + -3
12y = 31 + -3

Combine like terms: 31 + -3 = 28
12y = 28

Divide each side by '12'.
y = 2.333333333

Simplifying
y = 2.333333333

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