c-2(c-20)=7c

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Solution for c-2(c-20)=7c equation:


Simplifying
c + -2(c + -20) = 7c

Reorder the terms:
c + -2(-20 + c) = 7c
c + (-20 * -2 + c * -2) = 7c
c + (40 + -2c) = 7c

Reorder the terms:
40 + c + -2c = 7c

Combine like terms: c + -2c = -1c
40 + -1c = 7c

Solving
40 + -1c = 7c

Solving for variable 'c'.

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

Add '-7c' to each side of the equation.
40 + -1c + -7c = 7c + -7c

Combine like terms: -1c + -7c = -8c
40 + -8c = 7c + -7c

Combine like terms: 7c + -7c = 0
40 + -8c = 0

Add '-40' to each side of the equation.
40 + -40 + -8c = 0 + -40

Combine like terms: 40 + -40 = 0
0 + -8c = 0 + -40
-8c = 0 + -40

Combine like terms: 0 + -40 = -40
-8c = -40

Divide each side by '-8'.
c = 5

Simplifying
c = 5

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