.3x-.5x-2=21

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Solution for .3x-.5x-2=21 equation:


Simplifying
0.3x + -0.5x + -2 = 21

Reorder the terms:
-2 + 0.3x + -0.5x = 21

Combine like terms: 0.3x + -0.5x = -0.2x
-2 + -0.2x = 21

Solving
-2 + -0.2x = 21

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + -0.2x = 21 + 2

Combine like terms: -2 + 2 = 0
0 + -0.2x = 21 + 2
-0.2x = 21 + 2

Combine like terms: 21 + 2 = 23
-0.2x = 23

Divide each side by '-0.2'.
x = -115

Simplifying
x = -115

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