100+30x=300+20x

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Solution for 100+30x=300+20x equation: 



100+30x=300+20x

We move all terms to the left:

100+30x-(300+20x)=0

We add all the numbers together, and all the variables

30x-(20x+300)+100=0

We get rid of parentheses

30x-20x-300+100=0

We add all the numbers together, and all the variables

10x-200=0

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

10x=200

x=200/10

x=20

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