20-30=1.8c

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Solution for 20-30=1.8c equation:


Simplifying
20 + -30 = 1.8c

Combine like terms: 20 + -30 = -10
-10 = 1.8c

Solving
-10 = 1.8c

Solving for variable 'c'.

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

Add '-1.8c' to each side of the equation.
-10 + -1.8c = 1.8c + -1.8c

Combine like terms: 1.8c + -1.8c = 0.0
-10 + -1.8c = 0.0

Add '10' to each side of the equation.
-10 + 10 + -1.8c = 0.0 + 10

Combine like terms: -10 + 10 = 0
0 + -1.8c = 0.0 + 10
-1.8c = 0.0 + 10

Combine like terms: 0.0 + 10 = 10
-1.8c = 10

Divide each side by '-1.8'.
c = -5.555555556

Simplifying
c = -5.555555556

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