15/8 k nhe

15/16 : 3/8 x 3/4 = 120/48 x 3/4 = 5/2 x 3/4 = 15/8

K mk nhé bn ⓛ ⓞ ⓥ ⓔ ♡ các bạn

15/8 k nhe

15/16 x 8/3 x3/4=5

7/8 :2=7/(8 x 2)=7/16

15/16 : 3/8 x 3/4 

= 15/16 x 8/3 x 3/4

= 5/2 x 3/4 

= 15/8

7/8 : 2 

= 7/8 x 1/2

= 7/16

(7/12 + 5/9 x 3/8) : 19/15

= (7/12 + 5/24) x 15/19

= (14/24 + 5/24) x 15/19

= 19/24 x 15/19

= 5/8

\(\frac{15}{16}:\frac{3}{8}\times\frac{3}{4}=\frac{15}{16}\times\frac{3}{8}\times\frac{3}{4}=\frac{15\times3\times3}{16\times8\times4}=\frac{135}{512}\)

\(7:\frac{8}{2}=7\times\frac{2}{8}=7\times\frac{1}{4}=\frac{7}{4}\)

\(\left[\frac{7}{12}+\frac{5}{9}\times\frac{3}{8}\right]:\frac{19}{15}\)

\(=\left[\frac{7}{12}+\frac{5\times3}{9\times8}\right]:\frac{19}{15}\)

\(=\left[\frac{7}{12}+\frac{5\times1}{3\times8}\right]:\frac{19}{15}\)

\(=\left[\frac{7}{12}+\frac{5}{24}\right]:\frac{19}{15}\)

\(=\left[\frac{14}{24}+\frac{5}{24}\right]:\frac{19}{15}\)

\(=\frac{19}{24}:\frac{19}{15}=\frac{19}{24}\times\frac{15}{19}=\frac{19\times15}{24\times19}=\frac{1\times5}{8\times1}=\frac{5}{8}\)

Người ta hỏi cái gì thế?

nói mk trả lời cho

16.2 + 8.4 + 32.3 \\
= 32 + 8 . 4 + 96 \\
= 40 + 100 \\
= 140

Bài làm:

Ta có: \(\frac{3}{4}.\frac{8}{9}.\frac{15}{16}.....\frac{2499}{2500}\)

\(=\frac{1.3}{2^2}.\frac{2.4}{3^2}.\frac{3.5}{4^2}.....\frac{49.51}{50^2}\)

\(=\frac{\left(1.2.3.....49\right).\left(3.4.5.....51\right)}{\left(2.3.4.....50\right).\left(2.3.4.....50\right)}\)

\(=\frac{51}{50.2}\)

\(=\frac{51}{100}\)

\(15^3\) : \(3^3\) = 125

\(15^3:3^3\)

\(=\left(3.5\right)^3:3^3\)

\(=3^3.5^3:3^3\)

\(=\left(3^3:3^3\right).5^3\)

\(=1.5^3\)

\(=5^3\)

15³ : 3³ =( 15 : 3 )³ = 5³=125

16/31

sao tính ra như vậy chỉ mình với

3/4*8/9*...*960/961

=1*3/2*2 * 2*4/3*3 * ... * 30*32/31*31

=(1*2*...*30)*(3*4*...*32)/(2*3*...*31)*(2*3*...*31)

=1*32 / 31*2

=32/62 = 16/31

 Kết quả là \(\frac{15}{8}\)  nhá  !!!

(chia thành nhân nghịch đảo rùi rút gọn từ từ là xong á :33)

Đáp án là: 15/8

15/16 chia 3/8 nhân 3/4

\(=\frac{15}{16}:\frac{3}{8}\cdot\frac{3}{4}\\ =\frac{15}{16}\cdot\frac{8}{3}\cdot\frac{3}{4}\\ =\frac{15}{8}.\)