120x-300=100x

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Solution for 120x-300=100x equation: 



120x-300=100x

We move all terms to the left:

120x-300-(100x)=0

We add all the numbers together, and all the variables

20x-300=0

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

20x=300

x=300/20

x=15

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