9(x+1)=15(x-1)

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


Simplifying
9(x + 1) = 15(x + -1)

Reorder the terms:
9(1 + x) = 15(x + -1)
(1 * 9 + x * 9) = 15(x + -1)
(9 + 9x) = 15(x + -1)

Reorder the terms:
9 + 9x = 15(-1 + x)
9 + 9x = (-1 * 15 + x * 15)
9 + 9x = (-15 + 15x)

Solving
9 + 9x = -15 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
9 + 9x + -15x = -15 + 15x + -15x

Combine like terms: 9x + -15x = -6x
9 + -6x = -15 + 15x + -15x

Combine like terms: 15x + -15x = 0
9 + -6x = -15 + 0
9 + -6x = -15

Add '-9' to each side of the equation.
9 + -9 + -6x = -15 + -9

Combine like terms: 9 + -9 = 0
0 + -6x = -15 + -9
-6x = -15 + -9

Combine like terms: -15 + -9 = -24
-6x = -24

Divide each side by '-6'.
x = 4

Simplifying
x = 4

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