3-x+2x=90

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


Simplifying
3 + -1x + 2x = 90

Combine like terms: -1x + 2x = 1x
3 + 1x = 90

Solving
3 + 1x = 90

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 1x = 90 + -3

Combine like terms: 3 + -3 = 0
0 + 1x = 90 + -3
1x = 90 + -3

Combine like terms: 90 + -3 = 87
1x = 87

Divide each side by '1'.
x = 87

Simplifying
x = 87

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