30000000-0.3^x=100

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Solution for 30000000-0.3^x=100 equation: 



30000000-0.3^x=100

We move all terms to the left:

30000000-0.3^x-(100)=0

We add all the numbers together, and all the variables

-0.3^x+29999900=0

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

-0.3^x=-29999900

x=-29999900/1

x=-29999900

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