-12=-5(X-1)+7(X-5)

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Solution for -12=-5(X-1)+7(X-5) equation:


Simplifying
-12 = -5(X + -1) + 7(X + -5)

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

Reorder the terms:
-12 = 5 + -5X + 7(-5 + X)
-12 = 5 + -5X + (-5 * 7 + X * 7)
-12 = 5 + -5X + (-35 + 7X)

Reorder the terms:
-12 = 5 + -35 + -5X + 7X

Combine like terms: 5 + -35 = -30
-12 = -30 + -5X + 7X

Combine like terms: -5X + 7X = 2X
-12 = -30 + 2X

Solving
-12 = -30 + 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.
-12 + -2X = -30 + 2X + -2X

Combine like terms: 2X + -2X = 0
-12 + -2X = -30 + 0
-12 + -2X = -30

Add '12' to each side of the equation.
-12 + 12 + -2X = -30 + 12

Combine like terms: -12 + 12 = 0
0 + -2X = -30 + 12
-2X = -30 + 12

Combine like terms: -30 + 12 = -18
-2X = -18

Divide each side by '-2'.
X = 9

Simplifying
X = 9

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