6+9c=21

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Solution for 6+9c=21 equation: 


Simplifying
6 + 9c = 21

Solving
6 + 9c = 21

Solving for variable 'c'.

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

Add '-6' to each side of the equation.
6 + -6 + 9c = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 9c = 21 + -6
9c = 21 + -6

Combine like terms: 21 + -6 = 15
9c = 15

Divide each side by '9'.
c = 1.666666667

Simplifying
c = 1.666666667

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