Toán Bài 1 : 4/9 ± 5/7 7/4 – 5/12 5/6 × 9/10 7/12 ÷ 3/8 Làm hộ mik nha Đúng cho ctlhn 26/07/2021 By Katherine Bài 1 : 4/9 ± 5/7 7/4 – 5/12 5/6 × 9/10 7/12 ÷ 3/8 Làm hộ mik nha Đúng cho ctlhn
4/9 + 5/7 = 28/63 + 45/63 = 73/63 4/9 – 5/7 = 28/63 – 45/63 = -17/63 7/4 – 5/12 = 21/12 – 5/12 = 16/12 = 4/3 5/6 × 9/10 = 45/60 = 3/4 7/12 : 3/8 = 7/12 . 8/3 = 56/36 = 14/9 Học tốt ^^ @vietdorapan Trả lời
`a,4/9 + 5/7` `= 28/63 + 45/63` `= 73/63` `b,4/9 – 5/7` `= 28/63 – 45/63` `= -17/63` `c,7/4 – 5/12` `= 21/12 – 5/12` `= 4/3` `d,5/6 × 9/10` `= 3/4` `e,7/12 ÷ 3/8` `= 7/12 . 8/3` `= 14/9` Xin hay nhất ! Trả lời