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

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


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

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

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

Reorder the terms for easier multiplication:
12 + 3x = -5(-4 + x)
12 + 3x = (-4 * -5 + x * -5)
12 + 3x = (20 + -5x)

Solving
12 + 3x = 20 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
12 + 3x + 5x = 20 + -5x + 5x

Combine like terms: 3x + 5x = 8x
12 + 8x = 20 + -5x + 5x

Combine like terms: -5x + 5x = 0
12 + 8x = 20 + 0
12 + 8x = 20

Add '-12' to each side of the equation.
12 + -12 + 8x = 20 + -12

Combine like terms: 12 + -12 = 0
0 + 8x = 20 + -12
8x = 20 + -12

Combine like terms: 20 + -12 = 8
8x = 8

Divide each side by '8'.
x = 1

Simplifying
x = 1

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