(-1/2) – (-3/5) + (-1/9) + 1/71-(-2/7)+4/35-7/18 25/08/2021 Bởi Mackenzie (-1/2) – (-3/5) + (-1/9) + 1/71-(-2/7)+4/35-7/18
Đáp án: =$\frac{1}{71}$ Giải thích các bước giải: ($\frac{-1}{2}$)-( $\frac{-3}{5}$)+($\frac{-1}{9}$ )+$\frac{1}{71}$ -($\frac{-2}{7}$)+ $\frac{4}{35}$ – $\frac{7}{18}$ =$\frac{-1}{2}$+ $\frac{3}{5}$ – $\frac{1}{9}$ + $\frac{1}{71}$ + $\frac{2}{7}$ + $\frac{4}{35}$ – $\frac{7}{18}$ =(-$\frac{1}{2}$- $\frac{1}{9}$ – $\frac{7}{18}$ )+($\frac{3}{5}$ + $\frac{2}{7}$ + $\frac{4}{35}$ )+$\frac{1}{71}$ =(-$\frac{9}{18}$ – $\frac{2}{18}$-$\frac{7}{18}$ )+($\frac{21}{35}$+ $\frac{10}{35}$ + $\frac{4}{35}$ )+$\frac{1}{71}$ =$\frac{-18}{18}$ + $\frac{35}{35}$ + $\frac{1}{71}$ =-1 + 1+$\frac{1}{71}$=0+$\frac{1}{71}$ =$\frac{1}{71}$ Bình luận
`(-1/2) – (-3/5) + (-1/9) + 1/71-(-2/7)+4/35-7/18` `=-1/2 +3/5-1/9+ 1/71+2/7+4/35-7/18` `=(-1/2-1/9-7/18 )+(3/5+2/7+4/35)+ 1/71` `=((-9)+(-2)-7)/18+(21+10+4)/35+ 1/71` `=(-18)/18+35/35+ 1/71` `=-1+1+ 1/71` `= 1/71` Bình luận
Đáp án:
=$\frac{1}{71}$
Giải thích các bước giải:
($\frac{-1}{2}$)-( $\frac{-3}{5}$)+($\frac{-1}{9}$ )+$\frac{1}{71}$ -($\frac{-2}{7}$)+ $\frac{4}{35}$ – $\frac{7}{18}$
=$\frac{-1}{2}$+ $\frac{3}{5}$ – $\frac{1}{9}$ + $\frac{1}{71}$ + $\frac{2}{7}$ + $\frac{4}{35}$ – $\frac{7}{18}$
=(-$\frac{1}{2}$- $\frac{1}{9}$ – $\frac{7}{18}$ )+($\frac{3}{5}$ + $\frac{2}{7}$ + $\frac{4}{35}$ )+$\frac{1}{71}$
=(-$\frac{9}{18}$ – $\frac{2}{18}$-$\frac{7}{18}$ )+($\frac{21}{35}$+ $\frac{10}{35}$ + $\frac{4}{35}$ )+$\frac{1}{71}$
=$\frac{-18}{18}$ + $\frac{35}{35}$ + $\frac{1}{71}$
=-1 + 1+$\frac{1}{71}$
=0+$\frac{1}{71}$
=$\frac{1}{71}$
`(-1/2) – (-3/5) + (-1/9) + 1/71-(-2/7)+4/35-7/18`
`=-1/2 +3/5-1/9+ 1/71+2/7+4/35-7/18`
`=(-1/2-1/9-7/18 )+(3/5+2/7+4/35)+ 1/71`
`=((-9)+(-2)-7)/18+(21+10+4)/35+ 1/71`
`=(-18)/18+35/35+ 1/71`
`=-1+1+ 1/71`
`= 1/71`