3x+x-20=2(x-5)

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Solution for 3x+x-20=2(x-5) equation: 



3x+x-20=2(x-5)

We move all terms to the left:

3x+x-20-(2(x-5))=0

We add all the numbers together, and all the variables

4x-(2(x-5))-20=0



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

2(x-5)

We multiply parentheses

2x-10

Back to the equation:

-(2x-10)



We get rid of parentheses

4x-2x+10-20=0

We add all the numbers together, and all the variables

2x-10=0

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

2x=10

x=10/2

x=5

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