15*15=9*(9+3x+1)

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Solution for 15*15=9*(9+3x+1) equation:


Simplifying
15 * 15 = 9(9 + 3x + 1)

Multiply 15 * 15
225 = 9(9 + 3x + 1)

Reorder the terms:
225 = 9(9 + 1 + 3x)

Combine like terms: 9 + 1 = 10
225 = 9(10 + 3x)
225 = (10 * 9 + 3x * 9)
225 = (90 + 27x)

Solving
225 = 90 + 27x

Solving for variable 'x'.

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

Add '-27x' to each side of the equation.
225 + -27x = 90 + 27x + -27x

Combine like terms: 27x + -27x = 0
225 + -27x = 90 + 0
225 + -27x = 90

Add '-225' to each side of the equation.
225 + -225 + -27x = 90 + -225

Combine like terms: 225 + -225 = 0
0 + -27x = 90 + -225
-27x = 90 + -225

Combine like terms: 90 + -225 = -135
-27x = -135

Divide each side by '-27'.
x = 5

Simplifying
x = 5

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