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16-8*2^x=-2^2x
We move all terms to the left:
16-8*2^x-(-2^2x)=0
Wy multiply elements
-16x-(-2^2x)+16=0
We get rid of parentheses
-16x+2^2x+16=0
We move all terms containing x to the left, all other terms to the right
-16x+2^2x=-16
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