x+80+3x-2=90

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Solution for x+80+3x-2=90 equation:


Simplifying
x + 80 + 3x + -2 = 90

Reorder the terms:
80 + -2 + x + 3x = 90

Combine like terms: 80 + -2 = 78
78 + x + 3x = 90

Combine like terms: x + 3x = 4x
78 + 4x = 90

Solving
78 + 4x = 90

Solving for variable 'x'.

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

Add '-78' to each side of the equation.
78 + -78 + 4x = 90 + -78

Combine like terms: 78 + -78 = 0
0 + 4x = 90 + -78
4x = 90 + -78

Combine like terms: 90 + -78 = 12
4x = 12

Divide each side by '4'.
x = 3

Simplifying
x = 3

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