.8c-.1c=.9c

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Solution for .8c-.1c=.9c equation:


Simplifying
0.8c + -0.1c = 0.9c

Combine like terms: 0.8c + -0.1c = 0.7c
0.7c = 0.9c

Solving
0.7c = 0.9c

Solving for variable 'c'.

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

Add '-0.9c' to each side of the equation.
0.7c + -0.9c = 0.9c + -0.9c

Combine like terms: 0.7c + -0.9c = -0.2c
-0.2c = 0.9c + -0.9c

Combine like terms: 0.9c + -0.9c = 0.0
-0.2c = 0.0

Divide each side by '-0.2'.
c = 0

Simplifying
c = 0

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