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1.1^x=0.9
We move all terms to the left:
1.1^x-(0.9)=0
We add all the numbers together, and all the variables
1.1^x-0.9=0
We move all terms containing x to the left, all other terms to the right
1.1^x=0.9
x=0.9/1
x=0.9
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