K
Khách
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CC
3
23 tháng 2 2016
Ta có:\(\frac{7}{8}=\frac{1}{8}+\frac{2}{8}+\frac{4}{8}=\frac{1}{8}+\frac{1}{4}+\frac{1}{2}\)
Vậy \(\frac{7}{8}=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}\)
21 tháng 7 2017
1 + 9 = 10
2 + 8 = 10
3 + 7 = 10
4 + 6 = 10
Có thể lập tất cả: 1/9 ; 2/8 ; 3/7 ; 4/6
2 tháng 12 2021
hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
15 tháng 6 2017
mẫu số là :
( 25 + 7 ) : 2 = 16
tử số là :
25 - 16 = 9
đáp số : \(\frac{9}{16}\)
dễ quá
NK
15 tháng 6 2017
toán lớp 4 sao khó z ta
mik lớp 5 rùi nhưng đay là toán nâng cao huhuhuhu
13/35=1/5+1/7+1/35 17/63=1/7+1/9+1/63
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