30x+10x-20=500

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Solution for 30x+10x-20=500 equation: 



30x+10x-20=500

We move all terms to the left:

30x+10x-20-(500)=0

We add all the numbers together, and all the variables

40x-520=0

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

40x=520

x=520/40

x=13

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