3(7+4x)=57

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Solution for 3(7+4x)=57 equation: 


Simplifying
3(7 + 4x) = 57
(7 * 3 + 4x * 3) = 57
(21 + 12x) = 57

Solving
21 + 12x = 57

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 + 12x = 57 + -21

Combine like terms: 21 + -21 = 0
0 + 12x = 57 + -21
12x = 57 + -21

Combine like terms: 57 + -21 = 36
12x = 36

Divide each side by '12'.
x = 3

Simplifying
x = 3

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