(4/5+1/2):(3/13-8/13} (2/3-1/4+5/11):(5/12+1-7/11 giúp mình vơi 05/09/2021 Bởi Josie (4/5+1/2):(3/13-8/13} (2/3-1/4+5/11):(5/12+1-7/11 giúp mình vơi
Đáp án: Giải thích các bước giải: ( 4/5 + 1/2) : ( 3/13 – 8/13) = ( 8/10 + 5/10 ) : (-5/13) = (13/10) : (-5/13) = -169/50 (2/3 – 1/4 + 5/11) : ( 5/12 +1 – 7/11) = ( 8/12 – 3/12 +5/11) : ( 5/12 + 11/11 – 7/11) = ( 5/12 + 5/11) : ( 5/12 + 4/11) = ( 55/121 + 60/121) : ( 55/121 + 48/121) = (55+60)/(55+48) = 115/103 Bình luận
Đáp án: Giải thích các bước giải: ($\frac{4}{5}$ + $\frac{1}{2}$) : ($\frac{3}{13}$ – $\frac{8}{13}$) = ($\frac{8}{10}$ + $\frac{5}{10}$) : (-$\frac{5}{13}$) = $\frac{13}{10}$ : (-$\frac{5}{13}$) = $\frac{13}{10}$ . (-$\frac{13}{5}$) = $\frac{169}{50}$ ($\frac{2}{3}$ – $\frac{1}{4}$ + $\frac{5}{11}$) : ($\frac{5}{12}$ + 1 – $\frac{7}{11}$) = ($\frac{8}{12}$ – $\frac{3}{12}$ + $\frac{5}{11}$) : ($\frac{17}{12}$ – $\frac{7}{11}$) = ($\frac{5}{12}$ + $\frac{5}{11}$) : ($\frac{17}{12}$ – $\frac{7}{11}$) = ($\frac{55}{132}$ + $\frac{60}{132}$) : ($\frac{187}{132}$ – $\frac{84}{132}$ = $\frac{115}{132}$ : $\frac{103}{132}$ = $\frac{115}{103}$ Bình luận
Đáp án:
Giải thích các bước giải:
( 4/5 + 1/2) : ( 3/13 – 8/13) = ( 8/10 + 5/10 ) : (-5/13)
= (13/10) : (-5/13)
= -169/50
(2/3 – 1/4 + 5/11) : ( 5/12 +1 – 7/11) = ( 8/12 – 3/12 +5/11) : ( 5/12 + 11/11 – 7/11)
= ( 5/12 + 5/11) : ( 5/12 + 4/11)
= ( 55/121 + 60/121) : ( 55/121 + 48/121)
= (55+60)/(55+48) = 115/103
Đáp án:
Giải thích các bước giải:
($\frac{4}{5}$ + $\frac{1}{2}$) : ($\frac{3}{13}$ – $\frac{8}{13}$)
= ($\frac{8}{10}$ + $\frac{5}{10}$) : (-$\frac{5}{13}$)
= $\frac{13}{10}$ : (-$\frac{5}{13}$)
= $\frac{13}{10}$ . (-$\frac{13}{5}$)
= $\frac{169}{50}$
($\frac{2}{3}$ – $\frac{1}{4}$ + $\frac{5}{11}$) : ($\frac{5}{12}$ + 1 – $\frac{7}{11}$)
= ($\frac{8}{12}$ – $\frac{3}{12}$ + $\frac{5}{11}$) : ($\frac{17}{12}$ – $\frac{7}{11}$)
= ($\frac{5}{12}$ + $\frac{5}{11}$) : ($\frac{17}{12}$ – $\frac{7}{11}$)
= ($\frac{55}{132}$ + $\frac{60}{132}$) : ($\frac{187}{132}$ – $\frac{84}{132}$
= $\frac{115}{132}$ : $\frac{103}{132}$
= $\frac{115}{103}$