-81-10x=7x+21

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Solution for -81-10x=7x+21 equation:


Simplifying
-81 + -10x = 7x + 21

Reorder the terms:
-81 + -10x = 21 + 7x

Solving
-81 + -10x = 21 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-81 + -10x + -7x = 21 + 7x + -7x

Combine like terms: -10x + -7x = -17x
-81 + -17x = 21 + 7x + -7x

Combine like terms: 7x + -7x = 0
-81 + -17x = 21 + 0
-81 + -17x = 21

Add '81' to each side of the equation.
-81 + 81 + -17x = 21 + 81

Combine like terms: -81 + 81 = 0
0 + -17x = 21 + 81
-17x = 21 + 81

Combine like terms: 21 + 81 = 102
-17x = 102

Divide each side by '-17'.
x = -6

Simplifying
x = -6

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