Chữa lại : 

\(\left(8,25\times3\right)+\left(8,5\times2\right)+8,30\)

= \(24,75+17+16,4\)

\(=41,75+16,4=58,15\)

Tk mk mk tk lại ! ^^ 

99,3 là đúng

99,3 đấy mk chắc chắn 

ai k giùm mk với năn nỉ mọi người

Bằng 0,2476470588  

2.5:1.5+8.24-3.24

=10:5+(8-3).24

=2+120

=122

 ai k mình , mình k lại

2.5:1.5+8x24-3x24

=10:5+(8-3).24

=2+120

=122 nha 

2.5:1.5+8.24-3.24

=10-5+192-72

=5+192-72

=197-72

=125

\(\dfrac{3.5}{8.24}=\dfrac{3.5}{8.3.8}=\dfrac{5}{64}\)

Chúc bạn học tốt

5/64

a) https://hoc247.net/hoi-dap/toan-7/thuc-hien-phep-tinh-5-5-27-7-23-0-5-5-27-16-23-faq218258.html

b) https://hoidap247.com/cau-hoi/1507941

b) \(\dfrac{10^9.49^4}{14^8.25^5}=\dfrac{\left(2.5\right)^9.\left(7^2\right)^4}{\left(7.2\right)^8.\left(5^2\right)^5}=\dfrac{2^9.5^9.7^6}{7^8.2^8.5^{10}}=\dfrac{2}{7.7.5}=\dfrac{2}{245}\)

\(a,=\left(\dfrac{140}{27}+\dfrac{1}{2}\cdot\dfrac{5}{27}\right)+\left(\dfrac{7}{23}+\dfrac{16}{23}\right)\\ =\left(\dfrac{140}{27}+\dfrac{5}{54}\right)+1=\dfrac{285}{54}+1=\dfrac{339}{54}=\dfrac{113}{18}\\ b,=\dfrac{2^9\cdot5^9\cdot7^8}{7^8\cdot2^8\cdot5^{10}}=\dfrac{2}{5}\)

\(\frac{3\times5}{8\times24}\)= \(\frac{15}{192}\)= \(\frac{15:3}{192:3}\)= \(\frac{5}{64}\)

\(\frac{3.5}{8.24}\)=\(\frac{15}{192}\)=\(\frac{5}{64}\)

kb nha 

\(\frac{3.5}{8.24}=\frac{3.5}{8.3.8}=\frac{5}{64}\)

a) .

b)

c)

d)

e)

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