6+9=3+6+c

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Solution for 6+9=3+6+c equation: 


Simplifying
6 + 9 = 3 + 6 + c

Combine like terms: 6 + 9 = 15
15 = 3 + 6 + c

Combine like terms: 3 + 6 = 9
15 = 9 + c

Solving
15 = 9 + c

Solving for variable 'c'.

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

Add '-1c' to each side of the equation.
15 + -1c = 9 + c + -1c

Combine like terms: c + -1c = 0
15 + -1c = 9 + 0
15 + -1c = 9

Add '-15' to each side of the equation.
15 + -15 + -1c = 9 + -15

Combine like terms: 15 + -15 = 0
0 + -1c = 9 + -15
-1c = 9 + -15

Combine like terms: 9 + -15 = -6
-1c = -6

Divide each side by '-1'.
c = 6

Simplifying
c = 6

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