3x+7x+90=

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Solution for 3x+7x+90= equation:


Simplifying
3x + 7x + 90 = 0

Reorder the terms:
90 + 3x + 7x = 0

Combine like terms: 3x + 7x = 10x
90 + 10x = 0

Solving
90 + 10x = 0

Solving for variable 'x'.

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

Add '-90' to each side of the equation.
90 + -90 + 10x = 0 + -90

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

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

Divide each side by '10'.
x = -9

Simplifying
x = -9

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