15(8)=(9+x)9

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Solution for 15(8)=(9+x)9 equation:


Simplifying
15(8) = (9 + x) * 9

Multiply 15 * 8
120 = (9 + x) * 9

Reorder the terms for easier multiplication:
120 = 9(9 + x)
120 = (9 * 9 + x * 9)
120 = (81 + 9x)

Solving
120 = 81 + 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.
120 + -9x = 81 + 9x + -9x

Combine like terms: 9x + -9x = 0
120 + -9x = 81 + 0
120 + -9x = 81

Add '-120' to each side of the equation.
120 + -120 + -9x = 81 + -120

Combine like terms: 120 + -120 = 0
0 + -9x = 81 + -120
-9x = 81 + -120

Combine like terms: 81 + -120 = -39
-9x = -39

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

Simplifying
x = 4.333333333

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