90+1x+3x=180

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Solution for 90+1x+3x=180 equation: 


Simplifying
90 + 1x + 3x = 180

Combine like terms: 1x + 3x = 4x
90 + 4x = 180

Solving
90 + 4x = 180

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 + 4x = 180 + -90

Combine like terms: 90 + -90 = 0
0 + 4x = 180 + -90
4x = 180 + -90

Combine like terms: 180 + -90 = 90
4x = 90

Divide each side by '4'.
x = 22.5

Simplifying
x = 22.5

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