3(7+c)=51

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Solution for 3(7+c)=51 equation: 


Simplifying
3(7 + c) = 51
(7 * 3 + c * 3) = 51
(21 + 3c) = 51

Solving
21 + 3c = 51

Solving for variable 'c'.

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

Add '-21' to each side of the equation.
21 + -21 + 3c = 51 + -21

Combine like terms: 21 + -21 = 0
0 + 3c = 51 + -21
3c = 51 + -21

Combine like terms: 51 + -21 = 30
3c = 30

Divide each side by '3'.
c = 10

Simplifying
c = 10

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