7y+5-y+8=31

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


Simplifying
7y + 5 + -1y + 8 = 31

Reorder the terms:
5 + 8 + 7y + -1y = 31

Combine like terms: 5 + 8 = 13
13 + 7y + -1y = 31

Combine like terms: 7y + -1y = 6y
13 + 6y = 31

Solving
13 + 6y = 31

Solving for variable 'y'.

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

Add '-13' to each side of the equation.
13 + -13 + 6y = 31 + -13

Combine like terms: 13 + -13 = 0
0 + 6y = 31 + -13
6y = 31 + -13

Combine like terms: 31 + -13 = 18
6y = 18

Divide each side by '6'.
y = 3

Simplifying
y = 3

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