Ответ:
1) -5•49•4=-20•49=-980
2)3 1/8 (-у+8)-4 5/8(у-16)=25/8×(-у+8)-37/8×(у-16)=1/8•(25(-у+8)-37(у-16))=1/8×(-25у+200-37у+592)=1/8•(-62у+792)=1/8•(-2(31у-396))=-1/4×(31у-396)
3)0,8 • (-125) • 0,5 • (-2)=100×0,5×2=50×2=100
4)-3,73 • 50 • (-2) • (-0,01)=-(3,73×2×50×0,01)=-(3,73×0,01)=-3,73
5)7/8 • (-4,5) • (-1 1/7) • 0,4=7/8×(-9/2)×(-8/7)×2/5=9×1/5=1/5
6)-4/9 • (-3/11) • 9/16 • (-22)=-16 43/80
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Answers & Comments
Ответ:
1) -5•49•4=-20•49=-980
2)3 1/8 (-у+8)-4 5/8(у-16)=25/8×(-у+8)-37/8×(у-16)=1/8•(25(-у+8)-37(у-16))=1/8×(-25у+200-37у+592)=1/8•(-62у+792)=1/8•(-2(31у-396))=-1/4×(31у-396)
3)0,8 • (-125) • 0,5 • (-2)=100×0,5×2=50×2=100
4)-3,73 • 50 • (-2) • (-0,01)=-(3,73×2×50×0,01)=-(3,73×0,01)=-3,73
5)7/8 • (-4,5) • (-1 1/7) • 0,4=7/8×(-9/2)×(-8/7)×2/5=9×1/5=1/5
6)-4/9 • (-3/11) • 9/16 • (-22)=-16 43/80