-81=6y-13y-18

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Solution for -81=6y-13y-18 equation:


Simplifying
-81 = 6y + -13y + -18

Reorder the terms:
-81 = -18 + 6y + -13y

Combine like terms: 6y + -13y = -7y
-81 = -18 + -7y

Solving
-81 = -18 + -7y

Solving for variable 'y'.

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

Add '7y' to each side of the equation.
-81 + 7y = -18 + -7y + 7y

Combine like terms: -7y + 7y = 0
-81 + 7y = -18 + 0
-81 + 7y = -18

Add '81' to each side of the equation.
-81 + 81 + 7y = -18 + 81

Combine like terms: -81 + 81 = 0
0 + 7y = -18 + 81
7y = -18 + 81

Combine like terms: -18 + 81 = 63
7y = 63

Divide each side by '7'.
y = 9

Simplifying
y = 9

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