3x+90=x+15

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Solution for 3x+90=x+15 equation: 



3x+90=x+15

We move all terms to the left:

3x+90-(x+15)=0

We get rid of parentheses

3x-x-15+90=0

We add all the numbers together, and all the variables

2x+75=0

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

2x=-75

x=-75/2

x=-37+1/2

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