50-x=3(20-x)

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Solution for 50-x=3(20-x) equation: 



50-x=3(20-x)

We move all terms to the left:

50-x-(3(20-x))=0

We add all the numbers together, and all the variables

-x-(3(-1x+20))+50=0

We add all the numbers together, and all the variables

-1x-(3(-1x+20))+50=0



We calculate terms in parentheses: -(3(-1x+20)), so:

3(-1x+20)

We multiply parentheses

-3x+60

Back to the equation:

-(-3x+60)



We get rid of parentheses

-1x+3x-60+50=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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