7=3(x-4)-(x-5)

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Solution for 7=3(x-4)-(x-5) equation:


Simplifying
7 = 3(x + -4) + -1(x + -5)

Reorder the terms:
7 = 3(-4 + x) + -1(x + -5)
7 = (-4 * 3 + x * 3) + -1(x + -5)
7 = (-12 + 3x) + -1(x + -5)

Reorder the terms:
7 = -12 + 3x + -1(-5 + x)
7 = -12 + 3x + (-5 * -1 + x * -1)
7 = -12 + 3x + (5 + -1x)

Reorder the terms:
7 = -12 + 5 + 3x + -1x

Combine like terms: -12 + 5 = -7
7 = -7 + 3x + -1x

Combine like terms: 3x + -1x = 2x
7 = -7 + 2x

Solving
7 = -7 + 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.
7 + -2x = -7 + 2x + -2x

Combine like terms: 2x + -2x = 0
7 + -2x = -7 + 0
7 + -2x = -7

Add '-7' to each side of the equation.
7 + -7 + -2x = -7 + -7

Combine like terms: 7 + -7 = 0
0 + -2x = -7 + -7
-2x = -7 + -7

Combine like terms: -7 + -7 = -14
-2x = -14

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

Simplifying
x = 7

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