-21=-5x+3x-3

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Solution for -21=-5x+3x-3 equation:


Simplifying
-21 = -5x + 3x + -3

Reorder the terms:
-21 = -3 + -5x + 3x

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

Solving
-21 = -3 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-21 + 2x = -3 + -2x + 2x

Combine like terms: -2x + 2x = 0
-21 + 2x = -3 + 0
-21 + 2x = -3

Add '21' to each side of the equation.
-21 + 21 + 2x = -3 + 21

Combine like terms: -21 + 21 = 0
0 + 2x = -3 + 21
2x = -3 + 21

Combine like terms: -3 + 21 = 18
2x = 18

Divide each side by '2'.
x = 9

Simplifying
x = 9

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