3x+(1.5x)=90

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Solution for 3x+(1.5x)=90 equation: 



3x+(1.5x)=90

We move all terms to the left:

3x+(1.5x)-(90)=0

We add all the numbers together, and all the variables

3x+(+1.5x)-90=0

We get rid of parentheses

3x+1.5x-90=0

We add all the numbers together, and all the variables

4.5x-90=0

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

4.5x=90

x=90/4.5

x=20

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