x-21+90=3x-17

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Solution for x-21+90=3x-17 equation:


Simplifying
x + -21 + 90 = 3x + -17

Reorder the terms:
-21 + 90 + x = 3x + -17

Combine like terms: -21 + 90 = 69
69 + x = 3x + -17

Reorder the terms:
69 + x = -17 + 3x

Solving
69 + x = -17 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
69 + x + -3x = -17 + 3x + -3x

Combine like terms: x + -3x = -2x
69 + -2x = -17 + 3x + -3x

Combine like terms: 3x + -3x = 0
69 + -2x = -17 + 0
69 + -2x = -17

Add '-69' to each side of the equation.
69 + -69 + -2x = -17 + -69

Combine like terms: 69 + -69 = 0
0 + -2x = -17 + -69
-2x = -17 + -69

Combine like terms: -17 + -69 = -86
-2x = -86

Divide each side by '-2'.
x = 43

Simplifying
x = 43

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