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30=650000-x/650000*100
We move all terms to the left:
30-(650000-x/650000*100)=0
We add all the numbers together, and all the variables
-(-x/650000*100+650000)+30=0
We get rid of parentheses
x/650000*100-650000+30=0
We multiply all the terms by the denominator
x-650000*650000*100+30*650000*100=0
We add all the numbers together, and all the variables
x-42248050000000=0
We move all terms containing x to the left, all other terms to the right
x=42248050000000
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