9x+3x=7x+13

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Solution for 9x+3x=7x+13 equation: 



9x+3x=7x+13

We move all terms to the left:

9x+3x-(7x+13)=0

We add all the numbers together, and all the variables

12x-(7x+13)=0

We get rid of parentheses

12x-7x-13=0

We add all the numbers together, and all the variables

5x-13=0

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

5x=13

x=13/5

x=2+3/5

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