4x+90=9x-10

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Solution for 4x+90=9x-10 equation:


Simplifying
4x + 90 = 9x + -10

Reorder the terms:
90 + 4x = 9x + -10

Reorder the terms:
90 + 4x = -10 + 9x

Solving
90 + 4x = -10 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
90 + 4x + -9x = -10 + 9x + -9x

Combine like terms: 4x + -9x = -5x
90 + -5x = -10 + 9x + -9x

Combine like terms: 9x + -9x = 0
90 + -5x = -10 + 0
90 + -5x = -10

Add '-90' to each side of the equation.
90 + -90 + -5x = -10 + -90

Combine like terms: 90 + -90 = 0
0 + -5x = -10 + -90
-5x = -10 + -90

Combine like terms: -10 + -90 = -100
-5x = -100

Divide each side by '-5'.
x = 20

Simplifying
x = 20

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