39=3(x-7)

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Solution for 39=3(x-7) equation:


Simplifying
39 = 3(x + -7)

Reorder the terms:
39 = 3(-7 + x)
39 = (-7 * 3 + x * 3)
39 = (-21 + 3x)

Solving
39 = -21 + 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.
39 + -3x = -21 + 3x + -3x

Combine like terms: 3x + -3x = 0
39 + -3x = -21 + 0
39 + -3x = -21

Add '-39' to each side of the equation.
39 + -39 + -3x = -21 + -39

Combine like terms: 39 + -39 = 0
0 + -3x = -21 + -39
-3x = -21 + -39

Combine like terms: -21 + -39 = -60
-3x = -60

Divide each side by '-3'.
x = 20

Simplifying
x = 20

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