Ответ:
2^x(2+0.5+1)=28
2^x(3.5)=28
2^x=8
2^x=2^3
x=3
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Ответ:
2^x(2+0.5+1)=28
2^x(3.5)=28
2^x=8
2^x=2^3
x=3