X+9=4x-30

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Solution for X+9=4x-30 equation: 



X+9=4X-30

We move all terms to the left:

X+9-(4X-30)=0

We get rid of parentheses

X-4X+30+9=0

We add all the numbers together, and all the variables

-3X+39=0

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

-3X=-39

X=-39/-3

X=+13

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