20=6+3(c-7)

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Solution for 20=6+3(c-7) equation: 


Simplifying
20 = 6 + 3(c + -7)

Reorder the terms:
20 = 6 + 3(-7 + c)
20 = 6 + (-7 * 3 + c * 3)
20 = 6 + (-21 + 3c)

Combine like terms: 6 + -21 = -15
20 = -15 + 3c

Solving
20 = -15 + 3c

Solving for variable 'c'.

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

Add '-3c' to each side of the equation.
20 + -3c = -15 + 3c + -3c

Combine like terms: 3c + -3c = 0
20 + -3c = -15 + 0
20 + -3c = -15

Add '-20' to each side of the equation.
20 + -20 + -3c = -15 + -20

Combine like terms: 20 + -20 = 0
0 + -3c = -15 + -20
-3c = -15 + -20

Combine like terms: -15 + -20 = -35
-3c = -35

Divide each side by '-3'.
c = 11.66666667

Simplifying
c = 11.66666667

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