75-x=3x+15

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Solution for 75-x=3x+15 equation: 



75-x=3x+15

We move all terms to the left:

75-x-(3x+15)=0

We add all the numbers together, and all the variables

-1x-(3x+15)+75=0

We get rid of parentheses

-1x-3x-15+75=0

We add all the numbers together, and all the variables

-4x+60=0

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

-4x=-60

x=-60/-4

x=+15

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