18=20-2c

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Solution for 18=20-2c equation:


Simplifying
18 = 20 + -2c

Solving
18 = 20 + -2c

Solving for variable 'c'.

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

Add '2c' to each side of the equation.
18 + 2c = 20 + -2c + 2c

Combine like terms: -2c + 2c = 0
18 + 2c = 20 + 0
18 + 2c = 20

Add '-18' to each side of the equation.
18 + -18 + 2c = 20 + -18

Combine like terms: 18 + -18 = 0
0 + 2c = 20 + -18
2c = 20 + -18

Combine like terms: 20 + -18 = 2
2c = 2

Divide each side by '2'.
c = 1

Simplifying
c = 1

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