Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a) \(1\frac{5}{7}\)x \(\frac{3}{4}\)= \(\frac{12}{7}\)x \(\frac{3}{4}\)= \(\frac{9}{7}\)
b) \(\frac{10}{11}\)x \(1\frac{1}{3}\)= \(\frac{10}{11}\)x \(\frac{4}{3}\)= \(\frac{40}{33}\)
c) 3,57 x 4,1 + 2,43 x 4,1
= 4,1 x ( 3,57 + 2,43 )
= 4,1 x 6
= 24,6
d) 3,42 : 0,57 x 8,4 - 6,8
= 6 x 8,4 - 6,8
= 50,4 - 6,8
= 43,6
3,57 x 4,1 + 2,43 x 4,1
= 4,1 x (3,57 + 2,43) = 4,1 x 6
= 24,6.
3,42 : 0,57 x 8,4 - 6,8
= 50,4 - 6,8
= 43,6.
k nha
3, 57 x 4, 1 + 2, 43 x 4, 1
= ( 3, 57 + 2, 43 ) x 4, 1
= 6 x 4, 1
= 24, 6
3, 42 : 0, 57 x 8, 4 - 6, 8
= 6 x 8, 4 - 6, 8
= 50, 4 - 6, 8
= 43, 6
1\(\frac{5}{7}\)x\(\frac{3}{4}\)
=\(\frac{35}{7}\)x \(\frac{3}{4}\)
=5x\(\frac{3}{4}\)
=\(\frac{23}{4}\)
\(\frac{10}{11}\):\(1\frac{1}{3}\)
=\(\frac{10}{11}\):\(\frac{4}{3}\)
=\(\frac{10}{11}\)x\(\frac{3}{4}\)
=\(\frac{30}{44}\)
=\(\frac{15}{22}\)
3,57x4,1+2,43x4,1
=(3,57+2,43)x 4,1
=6x4,1
=24,6
còn câu cúi mik ko bik làm
1/5/7 x 3/4
=(1+5/7)x3/4
=1x3/4+5/7x3/4
=3/4+15/28
=21/28+15/28
=36/28
=9/7
10/11 : 1/1/3
=10/11:(1+1/3)
=10/11:1+10/11:1/3
=10/11+10/11x3
=10/11+30/11
=40/11
3,57x4,1+2,43x4,1
=4,1x(3,57+2,43)
=4,1x6
=24,6
3,42:0,57x8,4-6,8
=342/100:57/100x84/10-68/10
=342/100x100/57x16/10
=342/57x8/5
=6x8/5
=48/5
=9.6
mình giải rất rõ ràng và cụ thể
nên hãy k cho mình nha
1a) \(\frac{10}{11}:\frac{11}{3}=\frac{10}{11}.\frac{3}{11}=\frac{30}{121}\)
b) \(3,42:0,75.8,4-6,8\)
\(=4,56.8,4-6,8=38,304-6,8=31,504\)
2a) \(\frac{21}{11}.\frac{22}{17}.\frac{68}{63}=\frac{21.22.68}{11.17.63}=\frac{7.3.2.11.17.4}{11.17.3.3.7}=\frac{2.4}{3}=\frac{8}{3}\)
b) \(\frac{5}{14}.\frac{7}{13}.\frac{26}{25}=\frac{5.7.26}{14.13.25}=\frac{5.7.13.2}{2.7.13.5.5}=\frac{1}{5}\)
\(\frac{10}{11}:1\frac{1}{3}\)
\(=\frac{10}{11}:\frac{4}{3}\)
\(=\frac{10}{11}\cdot\frac{3}{4}\)
\(=\frac{15}{22}\)
\(3,42:0,57\cdot8,4-6,8\)
\(=6\cdot8,4-6,8\)
\(=50,4-6,8\)
\(43,6\)
2.
\(\frac{21}{11}\cdot\frac{22}{17}\cdot\frac{68}{63}\)
\(=\frac{21\cdot22\cdot68}{11\cdot17\cdot63}\)
\(=\frac{21\cdot11\cdot2\cdot17\cdot4}{11\cdot17\cdot21\cdot3}\)
\(=\frac{̸21\cdot̸11\cdot2\cdot̸17\cdot4}{̸11\cdot̸17\cdot̸21\cdot3}\)
\(=\frac{8}{3}\)
\(\frac{5}{14}\cdot\frac{7}{13}\cdot\frac{26}{25}\)
\(=\frac{5\cdot7\cdot26}{14\cdot13\cdot25}\)
\(=\frac{̸5\cdot̸7\cdot̸13\cdot2}{̸7\cdot2\cdot̸13\cdot̸5\cdot5}\)
\(=\frac{2}{10}\)
Cách 1:
3,57 x 4,1 + 2,43 x 4,1
= ( 3,57 + 2,43 ) x 4,1
= 6 x 4,1
= 24,6
Cách 2 :
3,57 x 4,1 + 2,43 x 41
= 14,637 + 9,963
= 24,6
C1 : = ( 3,57 + 2,43 ) x 4,1
= 6 x 4,1
= 24,6
C2 : = 14,637 + 9,963
= 24,6
a) \(1\frac{5}{7}\) x 3/4 b) 10/11 : 11/3 = 10/11 x 3/11 c) 3,57 x 4,1 + 2,43 x 4,1 d) 3,42 : 0,57 x 8,4 - 6,8
= 12/7 x 3/4 = 30/121 = 4,1 x (3,57 + 2,43) = 6 x 8,4 - 6,8
= 36/28 = 4,1 x 6 = 50,4 - 6,8
= 9/7 = 24,6 = 43,6