4/5×[1/2+1/4-1/8]=[1/5+(1/5-1/32)×3]×2/3 amplificãm pe 1/2 cu 4,pe 1/4 cu 2,pe1/5 cu 32 si pe 1/32 cu 5
4/5×[4/8+2/8-1/8]=[1/5+(32/160-5/160)×3]×2/3
4/5×5/8=[1/5+27/160×3]×2/3
1/2=[1/5+81/160]×2/3 amplificãm pe 1/5 cu 32
1/2=[32/160+81/160]×2/3
1/2=113/160×2/3
1/2=113/80 Fals
