13=4(x-2)-(x-9)

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Solution for 13=4(x-2)-(x-9) equation:


Simplifying
13 = 4(x + -2) + -1(x + -9)

Reorder the terms:
13 = 4(-2 + x) + -1(x + -9)
13 = (-2 * 4 + x * 4) + -1(x + -9)
13 = (-8 + 4x) + -1(x + -9)

Reorder the terms:
13 = -8 + 4x + -1(-9 + x)
13 = -8 + 4x + (-9 * -1 + x * -1)
13 = -8 + 4x + (9 + -1x)

Reorder the terms:
13 = -8 + 9 + 4x + -1x

Combine like terms: -8 + 9 = 1
13 = 1 + 4x + -1x

Combine like terms: 4x + -1x = 3x
13 = 1 + 3x

Solving
13 = 1 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
13 + -3x = 1 + 3x + -3x

Combine like terms: 3x + -3x = 0
13 + -3x = 1 + 0
13 + -3x = 1

Add '-13' to each side of the equation.
13 + -13 + -3x = 1 + -13

Combine like terms: 13 + -13 = 0
0 + -3x = 1 + -13
-3x = 1 + -13

Combine like terms: 1 + -13 = -12
-3x = -12

Divide each side by '-3'.
x = 4

Simplifying
x = 4

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