8=4(x-4)-(x-9)

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Solution for 8=4(x-4)-(x-9) equation:


Simplifying
8 = 4(x + -4) + -1(x + -9)

Reorder the terms:
8 = 4(-4 + x) + -1(x + -9)
8 = (-4 * 4 + x * 4) + -1(x + -9)
8 = (-16 + 4x) + -1(x + -9)

Reorder the terms:
8 = -16 + 4x + -1(-9 + x)
8 = -16 + 4x + (-9 * -1 + x * -1)
8 = -16 + 4x + (9 + -1x)

Reorder the terms:
8 = -16 + 9 + 4x + -1x

Combine like terms: -16 + 9 = -7
8 = -7 + 4x + -1x

Combine like terms: 4x + -1x = 3x
8 = -7 + 3x

Solving
8 = -7 + 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.
8 + -3x = -7 + 3x + -3x

Combine like terms: 3x + -3x = 0
8 + -3x = -7 + 0
8 + -3x = -7

Add '-8' to each side of the equation.
8 + -8 + -3x = -7 + -8

Combine like terms: 8 + -8 = 0
0 + -3x = -7 + -8
-3x = -7 + -8

Combine like terms: -7 + -8 = -15
-3x = -15

Divide each side by '-3'.
x = 5

Simplifying
x = 5

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