5c-7=-2c+21

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Solution for 5c-7=-2c+21 equation:


Simplifying
5c + -7 = -2c + 21

Reorder the terms:
-7 + 5c = -2c + 21

Reorder the terms:
-7 + 5c = 21 + -2c

Solving
-7 + 5c = 21 + -2c

Solving for variable 'c'.

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

Add '2c' to each side of the equation.
-7 + 5c + 2c = 21 + -2c + 2c

Combine like terms: 5c + 2c = 7c
-7 + 7c = 21 + -2c + 2c

Combine like terms: -2c + 2c = 0
-7 + 7c = 21 + 0
-7 + 7c = 21

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

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

Combine like terms: 21 + 7 = 28
7c = 28

Divide each side by '7'.
c = 4

Simplifying
c = 4

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