280-2x=5(2x-4)-180

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Solution for 280-2x=5(2x-4)-180 equation: 



280-2x=5(2x-4)-180

We move all terms to the left:

280-2x-(5(2x-4)-180)=0



We calculate terms in parentheses: -(5(2x-4)-180), so:

5(2x-4)-180

We multiply parentheses

10x-20-180

We add all the numbers together, and all the variables

10x-200

Back to the equation:

-(10x-200)



We get rid of parentheses

-2x-10x+200+280=0

We add all the numbers together, and all the variables

-12x+480=0

We move all terms containing x to the left, all other terms to the right

-12x=-480

x=-480/-12

x=+40

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