-21-5x+2x=9

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Solution for -21-5x+2x=9 equation: 


Simplifying
-21 + -5x + 2x = 9

Combine like terms: -5x + 2x = -3x
-21 + -3x = 9

Solving
-21 + -3x = 9

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + -3x = 9 + 21

Combine like terms: -21 + 21 = 0
0 + -3x = 9 + 21
-3x = 9 + 21

Combine like terms: 9 + 21 = 30
-3x = 30

Divide each side by '-3'.
x = -10

Simplifying
x = -10

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