6x+90=-9x

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Solution for 6x+90=-9x equation:


Simplifying
6x + 90 = -9x

Reorder the terms:
90 + 6x = -9x

Solving
90 + 6x = -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 + 6x + 9x = -9x + 9x

Combine like terms: 6x + 9x = 15x
90 + 15x = -9x + 9x

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

Add '-90' to each side of the equation.
90 + -90 + 15x = 0 + -90

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

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

Divide each side by '15'.
x = -6

Simplifying
x = -6

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