3x+9-5x+7-2x=20

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Solution for 3x+9-5x+7-2x=20 equation: 


Simplifying
3x + 9 + -5x + 7 + -2x = 20

Reorder the terms:
9 + 7 + 3x + -5x + -2x = 20

Combine like terms: 9 + 7 = 16
16 + 3x + -5x + -2x = 20

Combine like terms: 3x + -5x = -2x
16 + -2x + -2x = 20

Combine like terms: -2x + -2x = -4x
16 + -4x = 20

Solving
16 + -4x = 20

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + -4x = 20 + -16

Combine like terms: 16 + -16 = 0
0 + -4x = 20 + -16
-4x = 20 + -16

Combine like terms: 20 + -16 = 4
-4x = 4

Divide each side by '-4'.
x = -1

Simplifying
x = -1

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