X+75=3x+105

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Solution for X+75=3x+105 equation: 



X+75=3X+105

We move all terms to the left:

X+75-(3X+105)=0

We get rid of parentheses

X-3X-105+75=0

We add all the numbers together, and all the variables

-2X-30=0

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

-2X=30

X=30/-2

X=-15

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