18=9[x+8]

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Solution for 18=9[x+8] equation:


Simplifying
18 = 9[x + 8]

Reorder the terms:
18 = 9[8 + x]
18 = [8 * 9 + x * 9]
18 = [72 + 9x]

Solving
18 = 72 + 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 = 72 + 9x + -9x

Combine like terms: 9x + -9x = 0
18 + -9x = 72 + 0
18 + -9x = 72

Add '-18' to each side of the equation.
18 + -18 + -9x = 72 + -18

Combine like terms: 18 + -18 = 0
0 + -9x = 72 + -18
-9x = 72 + -18

Combine like terms: 72 + -18 = 54
-9x = 54

Divide each side by '-9'.
x = -6

Simplifying
x = -6

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