3(80)+1(20)=(3+1)x

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Solution for 3(80)+1(20)=(3+1)x equation: 



3(80)+1(20)=(3+1)x

We move all terms to the left:

3(80)+1(20)-((3+1)x)=0

We add all the numbers together, and all the variables

-(4x)+380+120=0

We add all the numbers together, and all the variables

-4x+500=0

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

-4x=-500

x=-500/-4

x=+125

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