10x+20x=9000

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Solution for 10x+20x=9000 equation: 



10x+20x=9000

We move all terms to the left:

10x+20x-(9000)=0

We add all the numbers together, and all the variables

30x-9000=0

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

30x=9000

x=9000/30

x=300

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