51=3(4+x)

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Solution for 51=3(4+x) equation: 


Simplifying
51 = 3(4 + x)
51 = (4 * 3 + x * 3)
51 = (12 + 3x)

Solving
51 = 12 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
51 + -3x = 12 + 3x + -3x

Combine like terms: 3x + -3x = 0
51 + -3x = 12 + 0
51 + -3x = 12

Add '-51' to each side of the equation.
51 + -51 + -3x = 12 + -51

Combine like terms: 51 + -51 = 0
0 + -3x = 12 + -51
-3x = 12 + -51

Combine like terms: 12 + -51 = -39
-3x = -39

Divide each side by '-3'.
x = 13

Simplifying
x = 13

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