Rut gon phan so
1313 / 1717
102102 / 109109
424242 / 535353
103103103 / 109109109
lam ho minh nha minh TICK cho
Lam tung buoc ra luon
Rút gọn các phân số sau :
a . 1313 / 1717 .
b . 102102 / 109109 .
c . 424242 / 535353 .
d . 103103103 / 109109109 .
1313/1717 = 13/17
102102/109109 = 102/109
424242/535353 = 42/53
103103103/109109109 = 103/109
Rut gon phan so
a 1113/1117 b 102102/109109 c 424242/535353 d103103103/109109109
35 / 49 = 10 / x lam tung buoc ra luon nha
35/49=5/7. 7x2=14( vì tử 5x2=10 nên mẫu cũng nhân với 2)
=> x=14
\(\frac{35}{49}=\frac{10}{x}\Rightarrow x=\frac{49.10}{35}=\frac{490}{35}=14\)
15phut = gio
ai lam truoc la minh tick nhung ma phai doi ra so thap phan
noi cho minh cach tinh luon nha
15 phút = 0,4 giờ
15 phút chia 60 ( vì 1 giờ = 60 phút )
cho cac phan so 15/35 , 11/13, 3/7, 101 /131 ,120/350
A) tim trong do cac p/s toi gian
B) rut gon phan so chua toi gian
ai giup minh lam minh tik cho nha
a) \(\frac{11}{13};\frac{3}{7};\frac{101}{131}\)
b)\(\frac{15}{35}=\frac{3}{7};\frac{120}{350}=\frac{12}{35}\)
a) p/s tối giản là : 3/7 ; 11/13 ; 101 /131
b) rút gọn : 15/35=3/7 ; 120 / 350= 12/35
3x7x13x37x39-10101/505050+70707
rut gon phan so nha
lam xong mjnk tjck cko aj mjnk cung tick
= ( 3 x 7 x 13 x 37 ) x 39 - 10101 / 10101 x ( 50 + 7 )
= 10101 x 39 - 10101 / 10101 x 57
= 10101 x ( 39 - 1 ) / 10101 x 57
= 10101 x 38 / 10101 x 57
= 2/3
Nhớ k nha !
1 Rut gon
272727/363636
6/9
12/36
60/105
42/126
75/300
lam tung buoc nha
272727/363636=272727:90909/363636:90909=3/4
6/9=6:3/9:3=2/3
12/36=12:12/36:12=1/3
60/105=60:15/105:15=4/7
42/126=42:42/126:42=1/3
75/300=75:75/300:75=1/4
272727/363636=272727:90909/363636:90909=3/4
6/9=6:3/9:3=2/3
12/36=12:12/36:12=1/3
60/105=60:15/105:15=4/7
42/126=42:42/126:42=1/3
75/300=75:75/300:75=1/4
a/ \(\frac{272727}{363636}=\frac{27.10101}{36.10101}=\frac{27}{36}=\frac{3}{4}\)
b/ \(\frac{6}{9}=\frac{2}{3}\)
c/ \(\frac{12}{36}=\frac{1}{3}\)
d/ \(\frac{60}{105}=\frac{4}{7}\)
e/\(\frac{42}{126}=\frac{1}{3}\)
f/\(\frac{75}{300}=\frac{1}{4}\)
\(\frac{\frac{15}{6.16}+\frac{15}{16.26}+\frac{15}{26.36}}{\frac{33}{6.16}-\frac{63}{16.26}+\frac{93}{26.16}}\)
tinh gium minh roi rut gon luon nha
ban nao lam day du minh moi tick
\(\frac{\frac{3}{2}\left(\frac{1}{6}-\frac{1}{16}+\frac{1}{16}-\frac{1}{26}+\frac{1}{26}-\frac{1}{36}\right)}{\frac{33}{10}\left(\frac{1}{6}-\frac{1}{16}+\frac{1}{16}-\frac{1}{26}+\frac{1}{26}-\frac{1}{36}\right)}=\frac{\frac{3}{2}}{\frac{3}{10}}=\frac{3}{2}:\frac{33}{10}=\frac{5}{11}\)
mk nghĩ bằng 5/11
đáng lẽ phải của lớp 5 chứ
bai 3viet mot doan hoi thoai trong doi song ve chu de tu trong do nguoi noi co su dung it nhat mot cau rut gon cho biet thanh phan duoc rut gon va nhan xet ve tac dung cua cac rut gon do (ko chep mang )
cac ban lam giup ho minh minh dang can gap den chieu nay la phai co