5x+3-2x-9=-21

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Solution for 5x+3-2x-9=-21 equation:


Simplifying
5x + 3 + -2x + -9 = -21

Reorder the terms:
3 + -9 + 5x + -2x = -21

Combine like terms: 3 + -9 = -6
-6 + 5x + -2x = -21

Combine like terms: 5x + -2x = 3x
-6 + 3x = -21

Solving
-6 + 3x = -21

Solving for variable 'x'.

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

Add '6' to each side of the equation.
-6 + 6 + 3x = -21 + 6

Combine like terms: -6 + 6 = 0
0 + 3x = -21 + 6
3x = -21 + 6

Combine like terms: -21 + 6 = -15
3x = -15

Divide each side by '3'.
x = -5

Simplifying
x = -5

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