3x-8x=2x+21

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Solution for 3x-8x=2x+21 equation:


Simplifying
3x + -8x = 2x + 21

Combine like terms: 3x + -8x = -5x
-5x = 2x + 21

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

Solving
-5x = 21 + 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.
-5x + -2x = 21 + 2x + -2x

Combine like terms: -5x + -2x = -7x
-7x = 21 + 2x + -2x

Combine like terms: 2x + -2x = 0
-7x = 21 + 0
-7x = 21

Divide each side by '-7'.
x = -3

Simplifying
x = -3

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