4x+9=90-5x

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


Simplifying
4x + 9 = 90 + -5x

Reorder the terms:
9 + 4x = 90 + -5x

Solving
9 + 4x = 90 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
9 + 4x + 5x = 90 + -5x + 5x

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

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

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 = 81
9x = 81

Divide each side by '9'.
x = 9

Simplifying
x = 9

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