4x-9=15x+90

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Solution for 4x-9=15x+90 equation:


Simplifying
4x + -9 = 15x + 90

Reorder the terms:
-9 + 4x = 15x + 90

Reorder the terms:
-9 + 4x = 90 + 15x

Solving
-9 + 4x = 90 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
-9 + 4x + -15x = 90 + 15x + -15x

Combine like terms: 4x + -15x = -11x
-9 + -11x = 90 + 15x + -15x

Combine like terms: 15x + -15x = 0
-9 + -11x = 90 + 0
-9 + -11x = 90

Add '9' to each side of the equation.
-9 + 9 + -11x = 90 + 9

Combine like terms: -9 + 9 = 0
0 + -11x = 90 + 9
-11x = 90 + 9

Combine like terms: 90 + 9 = 99
-11x = 99

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

Simplifying
x = -9

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