-81=-(x-7)-15x

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Solution for -81=-(x-7)-15x equation:


Simplifying
-81 = -1(x + -7) + -15x

Reorder the terms:
-81 = -1(-7 + x) + -15x
-81 = (-7 * -1 + x * -1) + -15x
-81 = (7 + -1x) + -15x

Combine like terms: -1x + -15x = -16x
-81 = 7 + -16x

Solving
-81 = 7 + -16x

Solving for variable 'x'.

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

Add '16x' to each side of the equation.
-81 + 16x = 7 + -16x + 16x

Combine like terms: -16x + 16x = 0
-81 + 16x = 7 + 0
-81 + 16x = 7

Add '81' to each side of the equation.
-81 + 81 + 16x = 7 + 81

Combine like terms: -81 + 81 = 0
0 + 16x = 7 + 81
16x = 7 + 81

Combine like terms: 7 + 81 = 88
16x = 88

Divide each side by '16'.
x = 5.5

Simplifying
x = 5.5

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