(6x-15)+x=90

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Solution for (6x-15)+x=90 equation: 



(6x-15)+x=90

We move all terms to the left:

(6x-15)+x-(90)=0

We add all the numbers together, and all the variables

x+(6x-15)-90=0

We get rid of parentheses

x+6x-15-90=0

We add all the numbers together, and all the variables

7x-105=0

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

7x=105

x=105/7

x=15

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