11=3(x-4)-(x-9)

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Solution for 11=3(x-4)-(x-9) equation: 


Simplifying
11 = 3(x + -4) + -1(x + -9)

Reorder the terms:
11 = 3(-4 + x) + -1(x + -9)
11 = (-4 * 3 + x * 3) + -1(x + -9)
11 = (-12 + 3x) + -1(x + -9)

Reorder the terms:
11 = -12 + 3x + -1(-9 + x)
11 = -12 + 3x + (-9 * -1 + x * -1)
11 = -12 + 3x + (9 + -1x)

Reorder the terms:
11 = -12 + 9 + 3x + -1x

Combine like terms: -12 + 9 = -3
11 = -3 + 3x + -1x

Combine like terms: 3x + -1x = 2x
11 = -3 + 2x

Solving
11 = -3 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
11 + -2x = -3 + 2x + -2x

Combine like terms: 2x + -2x = 0
11 + -2x = -3 + 0
11 + -2x = -3

Add '-11' to each side of the equation.
11 + -11 + -2x = -3 + -11

Combine like terms: 11 + -11 = 0
0 + -2x = -3 + -11
-2x = -3 + -11

Combine like terms: -3 + -11 = -14
-2x = -14

Divide each side by '-2'.
x = 7

Simplifying
x = 7

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