15=-5(x-4)

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Solution for 15=-5(x-4) equation:


Simplifying
15 = -5(x + -4)

Reorder the terms:
15 = -5(-4 + x)
15 = (-4 * -5 + x * -5)
15 = (20 + -5x)

Solving
15 = 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.
15 + 5x = 20 + -5x + 5x

Combine like terms: -5x + 5x = 0
15 + 5x = 20 + 0
15 + 5x = 20

Add '-15' to each side of the equation.
15 + -15 + 5x = 20 + -15

Combine like terms: 15 + -15 = 0
0 + 5x = 20 + -15
5x = 20 + -15

Combine like terms: 20 + -15 = 5
5x = 5

Divide each side by '5'.
x = 1

Simplifying
x = 1

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