28=-7x+3(-x-4)

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Solution for 28=-7x+3(-x-4) equation:


Simplifying
28 = -7x + 3(-1x + -4)

Reorder the terms:
28 = -7x + 3(-4 + -1x)
28 = -7x + (-4 * 3 + -1x * 3)
28 = -7x + (-12 + -3x)

Reorder the terms:
28 = -12 + -7x + -3x

Combine like terms: -7x + -3x = -10x
28 = -12 + -10x

Solving
28 = -12 + -10x

Solving for variable 'x'.

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

Add '10x' to each side of the equation.
28 + 10x = -12 + -10x + 10x

Combine like terms: -10x + 10x = 0
28 + 10x = -12 + 0
28 + 10x = -12

Add '-28' to each side of the equation.
28 + -28 + 10x = -12 + -28

Combine like terms: 28 + -28 = 0
0 + 10x = -12 + -28
10x = -12 + -28

Combine like terms: -12 + -28 = -40
10x = -40

Divide each side by '10'.
x = -4

Simplifying
x = -4

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