Toán Tính : a, 114/7:(-3/5)-198/7:(-3/5) b, 3:(-3/2)^3+1/9.6 28/11/2021 By Kylie Tính : a, 114/7:(-3/5)-198/7:(-3/5) b, 3:(-3/2)^3+1/9.6
a) `114/7 : (-3/5) – 198/7 : (-3/5)` `= (114/7-198/7):(-3/5)` `=-84/7 : (-3/5)` `=-12 : (-3/5)` `=20` b) `3: (-3/2)^2 + 1/9 .6` `=3 : 9/4 + 6/9` `=4/3 + 6/9` `=2` Trả lời
Đáp án: `a) 114/7 : (-3/5) – 198/7 : (-3/5)` `= 114/7 . (-5/3) – 198/7 . (-5/3)` `= -5/3 . (114/7 – 198/7)` `= -5/3 . (-12)` `= 20` `b) 3 : (-3/2)^3 + 1/9 . 6` `= 3 : (-27/8) + 2/3` `= -8/9 + 2/3` `= -2/9` Trả lời
a) `114/7 : (-3/5) – 198/7 : (-3/5)`
`= (114/7-198/7):(-3/5)`
`=-84/7 : (-3/5)`
`=-12 : (-3/5)`
`=20`
b) `3: (-3/2)^2 + 1/9 .6`
`=3 : 9/4 + 6/9`
`=4/3 + 6/9`
`=2`
Đáp án:
`a) 114/7 : (-3/5) – 198/7 : (-3/5)`
`= 114/7 . (-5/3) – 198/7 . (-5/3)`
`= -5/3 . (114/7 – 198/7)`
`= -5/3 . (-12)`
`= 20`
`b) 3 : (-3/2)^3 + 1/9 . 6`
`= 3 : (-27/8) + 2/3`
`= -8/9 + 2/3`
`= -2/9`