9-5x-4x=-90

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Solution for 9-5x-4x=-90 equation: 


Simplifying
9 + -5x + -4x = -90

Combine like terms: -5x + -4x = -9x
9 + -9x = -90

Solving
9 + -9x = -90

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + -9x = -90 + -9

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

Combine like terms: -90 + -9 = -99
-9x = -99

Divide each side by '-9'.
x = 11

Simplifying
x = 11

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