280=-8(5x+5)

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Solution for 280=-8(5x+5) equation: 


Simplifying
280 = -8(5x + 5)

Reorder the terms:
280 = -8(5 + 5x)
280 = (5 * -8 + 5x * -8)
280 = (-40 + -40x)

Solving
280 = -40 + -40x

Solving for variable 'x'.

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

Add '40x' to each side of the equation.
280 + 40x = -40 + -40x + 40x

Combine like terms: -40x + 40x = 0
280 + 40x = -40 + 0
280 + 40x = -40

Add '-280' to each side of the equation.
280 + -280 + 40x = -40 + -280

Combine like terms: 280 + -280 = 0
0 + 40x = -40 + -280
40x = -40 + -280

Combine like terms: -40 + -280 = -320
40x = -320

Divide each side by '40'.
x = -8

Simplifying
x = -8

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