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300=200*10^x
We move all terms to the left:
300-(200*10^x)=0
We get rid of parentheses
-200*10^x+300=0
Wy multiply elements
-2000x+300=0
We move all terms containing x to the left, all other terms to the right
-2000x=-300
x=-300/-2000
x=3/20
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