3x+15+18=90

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Solution for 3x+15+18=90 equation: 



3x+15+18=90

We move all terms to the left:

3x+15+18-(90)=0

We add all the numbers together, and all the variables

3x-57=0

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

3x=57

x=57/3

x=19

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