3c-1=20

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Solution for 3c-1=20 equation: 


Simplifying
3c + -1 = 20

Reorder the terms:
-1 + 3c = 20

Solving
-1 + 3c = 20

Solving for variable 'c'.

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

Add '1' to each side of the equation.
-1 + 1 + 3c = 20 + 1

Combine like terms: -1 + 1 = 0
0 + 3c = 20 + 1
3c = 20 + 1

Combine like terms: 20 + 1 = 21
3c = 21

Divide each side by '3'.
c = 7

Simplifying
c = 7

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