15+2x-6x-9=20

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Solution for 15+2x-6x-9=20 equation:


Simplifying
15 + 2x + -6x + -9 = 20

Reorder the terms:
15 + -9 + 2x + -6x = 20

Combine like terms: 15 + -9 = 6
6 + 2x + -6x = 20

Combine like terms: 2x + -6x = -4x
6 + -4x = 20

Solving
6 + -4x = 20

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 + -4x = 20 + -6

Combine like terms: 6 + -6 = 0
0 + -4x = 20 + -6
-4x = 20 + -6

Combine like terms: 20 + -6 = 14
-4x = 14

Divide each side by '-4'.
x = -3.5

Simplifying
x = -3.5

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