5(c+9)=3(21+c)

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Solution for 5(c+9)=3(21+c) equation:


Simplifying
5(c + 9) = 3(21 + c)

Reorder the terms:
5(9 + c) = 3(21 + c)
(9 * 5 + c * 5) = 3(21 + c)
(45 + 5c) = 3(21 + c)
45 + 5c = (21 * 3 + c * 3)
45 + 5c = (63 + 3c)

Solving
45 + 5c = 63 + 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.
45 + 5c + -3c = 63 + 3c + -3c

Combine like terms: 5c + -3c = 2c
45 + 2c = 63 + 3c + -3c

Combine like terms: 3c + -3c = 0
45 + 2c = 63 + 0
45 + 2c = 63

Add '-45' to each side of the equation.
45 + -45 + 2c = 63 + -45

Combine like terms: 45 + -45 = 0
0 + 2c = 63 + -45
2c = 63 + -45

Combine like terms: 63 + -45 = 18
2c = 18

Divide each side by '2'.
c = 9

Simplifying
c = 9

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