X+x+30=3(x+13)

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Solution for X+x+30=3(x+13) equation: 



X+X+30=3(X+13)

We move all terms to the left:

X+X+30-(3(X+13))=0

We add all the numbers together, and all the variables

2X-(3(X+13))+30=0



We calculate terms in parentheses: -(3(X+13)), so:

3(X+13)

We multiply parentheses

3X+39

Back to the equation:

-(3X+39)



We get rid of parentheses

2X-3X-39+30=0

We add all the numbers together, and all the variables

-1X-9=0

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

-X=9

X=9/-1

X=-9

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