(3x+15)+45=90

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Solution for (3x+15)+45=90 equation: 



(3x+15)+45=90

We move all terms to the left:

(3x+15)+45-(90)=0

We add all the numbers together, and all the variables

(3x+15)-45=0

We get rid of parentheses

3x+15-45=0

We add all the numbers together, and all the variables

3x-30=0

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

3x=30

x=30/3

x=10

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