Toán a 2- 5\7 + 9\21 = b 5\8 : 3 + 25\24 = a 6 x x = 5\8 : 3\4 = b x : 7\9 = 4- 16/07/2021 By Reagan a 2- 5\7 + 9\21 = b 5\8 : 3 + 25\24 = a 6 x x = 5\8 : 3\4 = b x : 7\9 = 4- 23\8 =
a, 2 – 5/7 + 9/21 = 9/7 + 9/21 = 12/7 b, 5/8 : 3 + 25/24 = 5/24 + 25/24 = 5/4 a, 6 × x = 5/8 : 3/4 6 × x = 5/6 x = 5/6 : 6 x = 5/36 b, x : 7/9 = 4- 23/8 x : 7/9 = 9/8 x = 9/8 × 7/9 x = 7/8 Trả lời
1a. 2 – 5/7 + 9/21 = 9/7 + 9/21 = 12/7 b 5/8 : 3 + 25/24 = 5/8×3 + 25/24 =5/24 + 25/24 = 30/24 = 15/12=5/4 2 6 x x = 5/8 : 3/4 x : 7/9 = 4-23/9 x = 5/6 : 6 x : 7/9 = 9/8 x = 5/36 x = 13/9 x 7/9 x = 7/8 chúc bạn học tốt ( Ù ω Ú) Trả lời
a, 2 – 5/7 + 9/21
= 9/7 + 9/21
= 12/7
b, 5/8 : 3 + 25/24
= 5/24 + 25/24
= 5/4
a, 6 × x = 5/8 : 3/4
6 × x = 5/6
x = 5/6 : 6
x = 5/36
b, x : 7/9 = 4- 23/8
x : 7/9 = 9/8
x = 9/8 × 7/9
x = 7/8
1a. 2 – 5/7 + 9/21 = 9/7 + 9/21
= 12/7
b 5/8 : 3 + 25/24 = 5/8×3 + 25/24
=5/24 + 25/24
= 30/24 = 15/12=5/4
2
6 x x = 5/8 : 3/4 x : 7/9 = 4-23/9
x = 5/6 : 6 x : 7/9 = 9/8
x = 5/36 x = 13/9 x 7/9
x = 7/8
chúc bạn học tốt ( Ù ω Ú)