18=3(3x-7)

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Solution for 18=3(3x-7) equation:


Simplifying
18 = 3(3x + -7)

Reorder the terms:
18 = 3(-7 + 3x)
18 = (-7 * 3 + 3x * 3)
18 = (-21 + 9x)

Solving
18 = -21 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
18 + -9x = -21 + 9x + -9x

Combine like terms: 9x + -9x = 0
18 + -9x = -21 + 0
18 + -9x = -21

Add '-18' to each side of the equation.
18 + -18 + -9x = -21 + -18

Combine like terms: 18 + -18 = 0
0 + -9x = -21 + -18
-9x = -21 + -18

Combine like terms: -21 + -18 = -39
-9x = -39

Divide each side by '-9'.
x = 4.333333333

Simplifying
x = 4.333333333

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