x-15+9x=3x+20

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Solution for x-15+9x=3x+20 equation: 



x-15+9x=3x+20

We move all terms to the left:

x-15+9x-(3x+20)=0

We add all the numbers together, and all the variables

10x-(3x+20)-15=0

We get rid of parentheses

10x-3x-20-15=0

We add all the numbers together, and all the variables

7x-35=0

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

7x=35

x=35/7

x=5

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