3(7+x)=72

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Solution for 3(7+x)=72 equation: 


Simplifying
3(7 + x) = 72
(7 * 3 + x * 3) = 72
(21 + 3x) = 72

Solving
21 + 3x = 72

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 3x = 72 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = 72 + -21
3x = 72 + -21

Combine like terms: 72 + -21 = 51
3x = 51

Divide each side by '3'.
x = 17

Simplifying
x = 17

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