5x+12-3x+21=-6

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Solution for 5x+12-3x+21=-6 equation:


Simplifying
5x + 12 + -3x + 21 = -6

Reorder the terms:
12 + 21 + 5x + -3x = -6

Combine like terms: 12 + 21 = 33
33 + 5x + -3x = -6

Combine like terms: 5x + -3x = 2x
33 + 2x = -6

Solving
33 + 2x = -6

Solving for variable 'x'.

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

Add '-33' to each side of the equation.
33 + -33 + 2x = -6 + -33

Combine like terms: 33 + -33 = 0
0 + 2x = -6 + -33
2x = -6 + -33

Combine like terms: -6 + -33 = -39
2x = -39

Divide each side by '2'.
x = -19.5

Simplifying
x = -19.5

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