(X+13)*3=7x-9

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Solution for (X+13)*3=7x-9 equation: 



(X+13)*3=7X-9

We move all terms to the left:

(X+13)*3-(7X-9)=0

We multiply parentheses

3X-(7X-9)+39=0

We get rid of parentheses

3X-7X+9+39=0

We add all the numbers together, and all the variables

-4X+48=0

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

-4X=-48

X=-48/-4

X=+12

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