x2=2x1+1=4+1=5
x3=2x2+1=10+1=11
x4=2x3+1=22+1=23
x5=2x4+1=46+1=47
Ответ: x5=47
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x2=2x1+1=4+1=5
x3=2x2+1=10+1=11
x4=2x3+1=22+1=23
x5=2x4+1=46+1=47
Ответ: x5=47