10x+13=20+9x

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Solution for 10x+13=20+9x equation: 



10x+13=20+9x

We move all terms to the left:

10x+13-(20+9x)=0

We add all the numbers together, and all the variables

10x-(9x+20)+13=0

We get rid of parentheses

10x-9x-20+13=0

We add all the numbers together, and all the variables

x-7=0

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

x=7

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