15=-13(x-1)+9

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Solution for 15=-13(x-1)+9 equation:


Simplifying
15 = -13(x + -1) + 9

Reorder the terms:
15 = -13(-1 + x) + 9
15 = (-1 * -13 + x * -13) + 9
15 = (13 + -13x) + 9

Reorder the terms:
15 = 13 + 9 + -13x

Combine like terms: 13 + 9 = 22
15 = 22 + -13x

Solving
15 = 22 + -13x

Solving for variable 'x'.

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

Add '13x' to each side of the equation.
15 + 13x = 22 + -13x + 13x

Combine like terms: -13x + 13x = 0
15 + 13x = 22 + 0
15 + 13x = 22

Add '-15' to each side of the equation.
15 + -15 + 13x = 22 + -15

Combine like terms: 15 + -15 = 0
0 + 13x = 22 + -15
13x = 22 + -15

Combine like terms: 22 + -15 = 7
13x = 7

Divide each side by '13'.
x = 0.5384615385

Simplifying
x = 0.5384615385

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