18=4(x-1)-(x-7)

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Solution for 18=4(x-1)-(x-7) equation:


Simplifying
18 = 4(x + -1) + -1(x + -7)

Reorder the terms:
18 = 4(-1 + x) + -1(x + -7)
18 = (-1 * 4 + x * 4) + -1(x + -7)
18 = (-4 + 4x) + -1(x + -7)

Reorder the terms:
18 = -4 + 4x + -1(-7 + x)
18 = -4 + 4x + (-7 * -1 + x * -1)
18 = -4 + 4x + (7 + -1x)

Reorder the terms:
18 = -4 + 7 + 4x + -1x

Combine like terms: -4 + 7 = 3
18 = 3 + 4x + -1x

Combine like terms: 4x + -1x = 3x
18 = 3 + 3x

Solving
18 = 3 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
18 + -3x = 3 + 3x + -3x

Combine like terms: 3x + -3x = 0
18 + -3x = 3 + 0
18 + -3x = 3

Add '-18' to each side of the equation.
18 + -18 + -3x = 3 + -18

Combine like terms: 18 + -18 = 0
0 + -3x = 3 + -18
-3x = 3 + -18

Combine like terms: 3 + -18 = -15
-3x = -15

Divide each side by '-3'.
x = 5

Simplifying
x = 5

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