Пошаговое объяснение:
Б) 3 1/9×(-1 2/7)= -(3 1/9×1 2/7)= - 28/9×9/7= - 28×9 / 9×7= - 4×1 /1×1= - 4/1= - 4
в) - 1 3/10×15/26= - (1 3/10×15/26)= - 13/10×15/26= - 13×15 / 10×26= - 1×3 / 2×2= - 3/4
г) - 3 3/14×(-2)=+(3 3/14×2)=45/14×2/1=45×2 / 14×1=45×1 / 7×1=45/7=6 3/7
д) - 5 1/3×(-1 1/8)=+(5 1/3×1 1/8) =16/3×9/8=16×9 / 3×8=2×3 / 1×1=6/1=6
е) 3×(-2 3/11)= - (3×2 3/11)=- 3/1×25/11= - 3×25 / 1×11= - 75/11= - 6 9/11
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Пошаговое объяснение:
Б) 3 1/9×(-1 2/7)= -(3 1/9×1 2/7)= - 28/9×9/7= - 28×9 / 9×7= - 4×1 /1×1= - 4/1= - 4
в) - 1 3/10×15/26= - (1 3/10×15/26)= - 13/10×15/26= - 13×15 / 10×26= - 1×3 / 2×2= - 3/4
г) - 3 3/14×(-2)=+(3 3/14×2)=45/14×2/1=45×2 / 14×1=45×1 / 7×1=45/7=6 3/7
д) - 5 1/3×(-1 1/8)=+(5 1/3×1 1/8) =16/3×9/8=16×9 / 3×8=2×3 / 1×1=6/1=6
е) 3×(-2 3/11)= - (3×2 3/11)=- 3/1×25/11= - 3×25 / 1×11= - 75/11= - 6 9/11