-1=3(x-4)-(x-7)

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Solution for -1=3(x-4)-(x-7) equation:


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

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

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

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

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

Combine like terms: 3x + -1x = 2x
-1 = -5 + 2x

Solving
-1 = -5 + 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.
-1 + -2x = -5 + 2x + -2x

Combine like terms: 2x + -2x = 0
-1 + -2x = -5 + 0
-1 + -2x = -5

Add '1' to each side of the equation.
-1 + 1 + -2x = -5 + 1

Combine like terms: -1 + 1 = 0
0 + -2x = -5 + 1
-2x = -5 + 1

Combine like terms: -5 + 1 = -4
-2x = -4

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

Simplifying
x = 2

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