$\frac{-5}{7}$ .$\frac{2}{11}$ +$\frac{-5}{7}$+1$\frac{-5}{7}$ 50%.1 $\frac{1}{3}$ .20. $\frac{7}{35}$ .0,75 20/08/2021 Bởi Natalia $\frac{-5}{7}$ .$\frac{2}{11}$ +$\frac{-5}{7}$+1$\frac{-5}{7}$ 50%.1 $\frac{1}{3}$ .20. $\frac{7}{35}$ .0,75
Đáp án: tham khảo Giải thích các bước giải: `(-5)/7*2/11+(-5)/7+1(-5)/7` `=(-10)/77+(-5)/7+1(-5)/7` `=(-10)/77+(-5)/7+2/7` `=(-65)/77+2/7` `=(-43)/77` `50%*1(1)/3*20*7/35*0,75` `=1/2*4/3*20*7/35*3/4` `=(1/2*20)*(4/3*3/4)*7/35` `=10*7/35` `=2` Bình luận
`( – 5 )/7 . 2/11 + ( – 5 )/7+ 1 ( – 5 )/7` `= ( – 10 )/77 + ( – 5 )/7 + 2/7` `= ( – 10 )/77 + (- 55 )/77 + 22/77` `= ( – 65 )/77 + 22/77` `= ( – 43 )/77` __________________________________ `50% . 1 1/3 . 20 . 7/35 . 0,75` `= 1/2 . 4/3 . 20 . 1/5 . 3/4` `= ( 4/3 . 3/4 ) . ( 1/2 . 1/5 . 20 )` `= 1 . ( 1/10 . 20 )` `= 1 . 2` `= 2` Bình luận
Đáp án:
tham khảo
Giải thích các bước giải:
`(-5)/7*2/11+(-5)/7+1(-5)/7`
`=(-10)/77+(-5)/7+1(-5)/7`
`=(-10)/77+(-5)/7+2/7`
`=(-65)/77+2/7`
`=(-43)/77`
`50%*1(1)/3*20*7/35*0,75`
`=1/2*4/3*20*7/35*3/4`
`=(1/2*20)*(4/3*3/4)*7/35`
`=10*7/35`
`=2`
`( – 5 )/7 . 2/11 + ( – 5 )/7+ 1 ( – 5 )/7`
`= ( – 10 )/77 + ( – 5 )/7 + 2/7`
`= ( – 10 )/77 + (- 55 )/77 + 22/77`
`= ( – 65 )/77 + 22/77`
`= ( – 43 )/77`
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`50% . 1 1/3 . 20 . 7/35 . 0,75`
`= 1/2 . 4/3 . 20 . 1/5 . 3/4`
`= ( 4/3 . 3/4 ) . ( 1/2 . 1/5 . 20 )`
`= 1 . ( 1/10 . 20 )`
`= 1 . 2`
`= 2`