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2.3^x+0.8=6.4
We move all terms to the left:
2.3^x+0.8-(6.4)=0
We add all the numbers together, and all the variables
2.3^x-5.6=0
We move all terms containing x to the left, all other terms to the right
2.3^x=5.6
x=5.6/1
x=5.6
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