18.30-20=c

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Solution for 18.30-20=c equation: 


Simplifying
18.30 + -20 = c

Combine like terms: 18.30 + -20 = -1.7
-1.7 = c

Solving
-1.7 = c

Solving for variable 'c'.

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

Add '-1c' to each side of the equation.
-1.7 + -1c = c + -1c

Combine like terms: c + -1c = 0
-1.7 + -1c = 0

Add '1.7' to each side of the equation.
-1.7 + 1.7 + -1c = 0 + 1.7

Combine like terms: -1.7 + 1.7 = 0.0
0.0 + -1c = 0 + 1.7
-1c = 0 + 1.7

Combine like terms: 0 + 1.7 = 1.7
-1c = 1.7

Divide each side by '-1'.
c = -1.7

Simplifying
c = -1.7

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