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-0.5^x=-0.73
We move all terms to the left:
-0.5^x-(-0.73)=0
We add all the numbers together, and all the variables
-0.5^x+0.73=0
We move all terms containing x to the left, all other terms to the right
-0.5^x=-0.73
x=-0.73/1
x=-0.73
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