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14*1.3^x=2*3.9^x
We move all terms to the left:
14*1.3^x-(2*3.9^x)=0
Wy multiply elements
14x-(2*3.9^x)=0
We get rid of parentheses
14x-2*3.9^x=0
Wy multiply elements
14x-6x=0
We add all the numbers together, and all the variables
8x=0
x=0/8
x=0
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