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

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


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

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

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

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

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

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

Solving
3 = -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.
3 + -2x = -3 + 2x + -2x

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

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

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

Combine like terms: -3 + -3 = -6
-2x = -6

Divide each side by '-2'.
x = 3

Simplifying
x = 3

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