21-3c=7c+1

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Solution for 21-3c=7c+1 equation:


Simplifying
21 + -3c = 7c + 1

Reorder the terms:
21 + -3c = 1 + 7c

Solving
21 + -3c = 1 + 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.
21 + -3c + -7c = 1 + 7c + -7c

Combine like terms: -3c + -7c = -10c
21 + -10c = 1 + 7c + -7c

Combine like terms: 7c + -7c = 0
21 + -10c = 1 + 0
21 + -10c = 1

Add '-21' to each side of the equation.
21 + -21 + -10c = 1 + -21

Combine like terms: 21 + -21 = 0
0 + -10c = 1 + -21
-10c = 1 + -21

Combine like terms: 1 + -21 = -20
-10c = -20

Divide each side by '-10'.
c = 2

Simplifying
c = 2

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