12+(9+8)=(12+x)9

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Solution for 12+(9+8)=(12+x)9 equation:


Simplifying
12 + (9 + 8) = (12 + x) * 9

Combine like terms: 9 + 8 = 17
12 + (17) = (12 + x) * 9
12 + 17 = (12 + x) * 9

Combine like terms: 12 + 17 = 29
29 = (12 + x) * 9

Reorder the terms for easier multiplication:
29 = 9(12 + x)
29 = (12 * 9 + x * 9)
29 = (108 + 9x)

Solving
29 = 108 + 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.
29 + -9x = 108 + 9x + -9x

Combine like terms: 9x + -9x = 0
29 + -9x = 108 + 0
29 + -9x = 108

Add '-29' to each side of the equation.
29 + -29 + -9x = 108 + -29

Combine like terms: 29 + -29 = 0
0 + -9x = 108 + -29
-9x = 108 + -29

Combine like terms: 108 + -29 = 79
-9x = 79

Divide each side by '-9'.
x = -8.777777778

Simplifying
x = -8.777777778

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