3(11+x)=21(-1+x)

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Solution for 3(11+x)=21(-1+x) equation: 



3(11+x)=21(-1+x)

We move all terms to the left:

3(11+x)-(21(-1+x))=0

We add all the numbers together, and all the variables

3(x+11)-(21(x-1))=0

We multiply parentheses

3x-(21(x-1))+33=0



We calculate terms in parentheses: -(21(x-1)), so:

21(x-1)

We multiply parentheses

21x-21

Back to the equation:

-(21x-21)



We get rid of parentheses

3x-21x+21+33=0

We add all the numbers together, and all the variables

-18x+54=0

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

-18x=-54

x=-54/-18

x=+3

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