-243=-90x+9x

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Solution for -243=-90x+9x equation:


Simplifying
-243 = -90x + 9x

Combine like terms: -90x + 9x = -81x
-243 = -81x

Solving
-243 = -81x

Solving for variable 'x'.

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

Add '81x' to each side of the equation.
-243 + 81x = -81x + 81x

Combine like terms: -81x + 81x = 0
-243 + 81x = 0

Add '243' to each side of the equation.
-243 + 243 + 81x = 0 + 243

Combine like terms: -243 + 243 = 0
0 + 81x = 0 + 243
81x = 0 + 243

Combine like terms: 0 + 243 = 243
81x = 243

Divide each side by '81'.
x = 3

Simplifying
x = 3

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