7c+3=4c+21

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Solution for 7c+3=4c+21 equation:


Simplifying
7c + 3 = 4c + 21

Reorder the terms:
3 + 7c = 4c + 21

Reorder the terms:
3 + 7c = 21 + 4c

Solving
3 + 7c = 21 + 4c

Solving for variable 'c'.

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

Add '-4c' to each side of the equation.
3 + 7c + -4c = 21 + 4c + -4c

Combine like terms: 7c + -4c = 3c
3 + 3c = 21 + 4c + -4c

Combine like terms: 4c + -4c = 0
3 + 3c = 21 + 0
3 + 3c = 21

Add '-3' to each side of the equation.
3 + -3 + 3c = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 3c = 21 + -3
3c = 21 + -3

Combine like terms: 21 + -3 = 18
3c = 18

Divide each side by '3'.
c = 6

Simplifying
c = 6

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