x+3x-20=90

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Solution for x+3x-20=90 equation:


Simplifying
x + 3x + -20 = 90

Reorder the terms:
-20 + x + 3x = 90

Combine like terms: x + 3x = 4x
-20 + 4x = 90

Solving
-20 + 4x = 90

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 4x = 90 + 20

Combine like terms: -20 + 20 = 0
0 + 4x = 90 + 20
4x = 90 + 20

Combine like terms: 90 + 20 = 110
4x = 110

Divide each side by '4'.
x = 27.5

Simplifying
x = 27.5

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