0=81+9-7x

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Solution for 0=81+9-7x equation: 


Simplifying
0 = 81 + 9 + -7x

Combine like terms: 81 + 9 = 90
0 = 90 + -7x

Solving
0 = 90 + -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.
0 + 7x = 90 + -7x + 7x
Remove the zero:
7x = 90 + -7x + 7x

Combine like terms: -7x + 7x = 0
7x = 90 + 0
7x = 90

Divide each side by '7'.
x = 12.85714286

Simplifying
x = 12.85714286

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