-81=7w-18

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Solution for -81=7w-18 equation:


Simplifying
-81 = 7w + -18

Reorder the terms:
-81 = -18 + 7w

Solving
-81 = -18 + 7w

Solving for variable 'w'.

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

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

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

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

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

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

Divide each side by '-7'.
w = -9

Simplifying
w = -9

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