a, 12/11 : 4 = bao nhiêu b, 7/2 – 4/7 nhân 15/8= bao nhiêu c, 4: 3/2 +2/9= bao nhiêu 12/10/2021 Bởi Reagan a, 12/11 : 4 = bao nhiêu b, 7/2 – 4/7 nhân 15/8= bao nhiêu c, 4: 3/2 +2/9= bao nhiêu
`a) 12/11 : 4` `= 12/11 × 1/4` `= 12/44` `= 3/11.` `b) 7/2 – 4/6 × 15/8` `= 7/2 – 60/56` `= 7/2 – 15/14` `= 49/14 – 15/14` `= 34/14.` `= 17/7` `c) 4 : 3/2 + 2/9` `= 4 × 2/3 + 2/9` `= 8/3 + 2/9` `= 24/9 + 2/9` `= 26/9.` Bình luận
a, $\frac{12}{11}$ : 4 = $\frac{12}{11}$ × $\frac{1}{4}$ = $\frac{3}{11}$ b, $\frac{7}{2}$ – $\frac{4}{7}$ × $\frac{15}{8}$ = $\frac{7}{2}$ – $\frac{15}{14}$ = $\frac{49}{14}$ – $\frac{15}{14}$ = $\frac{34}{14}$ = $\frac{17}{7}$ c, 4 : $\frac{3}{2}$ + $\frac{2}{9}$ = 4 . $\frac{2}{3}$ + $\frac{2}{9}$ = $\frac{8}{3}$ + $\frac{2}{9}$ = $\frac{24}{9}$ + $\frac{2}{9}$ = $\frac{26}{9}$ HỌC TỐT NHA ! #NOCOPY Bình luận
`a) 12/11 : 4`
`= 12/11 × 1/4`
`= 12/44`
`= 3/11.`
`b) 7/2 – 4/6 × 15/8`
`= 7/2 – 60/56`
`= 7/2 – 15/14`
`= 49/14 – 15/14`
`= 34/14.`
`= 17/7`
`c) 4 : 3/2 + 2/9`
`= 4 × 2/3 + 2/9`
`= 8/3 + 2/9`
`= 24/9 + 2/9`
`= 26/9.`
a, $\frac{12}{11}$ : 4
= $\frac{12}{11}$ × $\frac{1}{4}$
= $\frac{3}{11}$
b, $\frac{7}{2}$ – $\frac{4}{7}$ × $\frac{15}{8}$
= $\frac{7}{2}$ – $\frac{15}{14}$
= $\frac{49}{14}$ – $\frac{15}{14}$
= $\frac{34}{14}$
= $\frac{17}{7}$
c, 4 : $\frac{3}{2}$ + $\frac{2}{9}$
= 4 . $\frac{2}{3}$ + $\frac{2}{9}$
= $\frac{8}{3}$ + $\frac{2}{9}$
= $\frac{24}{9}$ + $\frac{2}{9}$
= $\frac{26}{9}$
HỌC TỐT NHA !
#NOCOPY