X+7x+3x=90

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


Simplifying
X + 7x + 3x = 90

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

Solving
X + 10x = 90

Solving for variable 'X'.

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

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

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

Simplifying
X = 90 + -10x

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