.3(x-40)-.3x=21

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Solution for .3(x-40)-.3x=21 equation: 


Simplifying
0.3(x + -40) + -0.3x = 21

Reorder the terms:
0.3(-40 + x) + -0.3x = 21
(-40 * 0.3 + x * 0.3) + -0.3x = 21
(-12 + 0.3x) + -0.3x = 21

Combine like terms: 0.3x + -0.3x = 0.0
-12 + 0.0 = 21
-12 = 21

Solving
-12 = 21

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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