\(16.17-\dfrac{5}{16}\times16+11\)

\(=272-5+11\)

\(=278\)

\(16\cdot17-\dfrac{5}{16}\cdot16+11\\ =16\cdot\left(17-\dfrac{5}{16}\right)+11\\ =16\cdot\dfrac{267}{16}+11\\ =267+11=278\)

d: \(\dfrac{5}{16}-\dfrac{5}{24}=\dfrac{5\cdot3}{48}-\dfrac{5\cdot2}{48}=\dfrac{5}{48}\)

e: \(-\dfrac{24}{17}-\left(-\dfrac{7}{17}-\dfrac{1}{16}\right)\)

\(=-\dfrac{24}{17}+\dfrac{7}{17}+\dfrac{1}{16}=-1+\dfrac{1}{16}\)

\(=-\dfrac{15}{16}\)

f: \(\dfrac{-11}{6}+\dfrac{2}{5}+\dfrac{-1}{6}\)

\(=\left(-\dfrac{11}{6}-\dfrac{1}{6}\right)+\dfrac{2}{5}\)

\(=-2+\dfrac{2}{5}=\dfrac{-8}{5}\)

\(=\frac{267}{427}\)

(16.17-5) : (16.20+11) = (272-5) : (320+11)

                                = 267:331

                                =0,8066465257

Ta có :\(\frac{16\times17-5}{16\times16+11}\)

\(=\frac{16\times\left(16+1\right)-5}{16\times16+11}\)

\(=\frac{16\times16+16-5}{16\times16+11}\)

\(=\frac{16\times16+11}{16\times16+11}\)

\(=1\)

16x 17-5/16 x 16 +11

= 16 x 17 - 16 x 5/16 + 11

= 272 - 5 + 11

= 267 + 11

= 278

bài ko ghi là tính nhanh nên mk ko tính nhanh nha

\(16.\left(17-\frac{5}{16}\right).\left(16+11\right)\)

=\(16.17.\left(17-\frac{5}{16}\right)\)

=\(272.\frac{267}{16}\)

=\(4539\)

\(\frac{16×17-5}{16×16+11}\)

\(=\frac{17-5}{16+11}\)

\(=\frac{12}{27}\)

1, \(\frac{16x17-5}{16x16+11}\)
\(=\frac{272-5}{256+11}\)
\(=\frac{267}{267}=1\)
2, \(\frac{45x17-17}{73+45x15}\)
\(=\frac{17x\left(45-1\right)}{73+675}\)
\(=\frac{17x44}{748}\)
\(=\frac{748}{748}=1\)

\(\frac{272-5}{256+11}\)= \(\frac{267}{267}\) = \(1\)

Vậy tổng của bài bằng 1

ta có

\(\dfrac{11}{16}< \dfrac{13}{16}< \dfrac{16}{16}< \dfrac{17}{16}\) (do cùng mẫu)

`=>` phân số lớn nhất là `17/16`

`=>C`

C.17/16 nha bạn !

Ta có : `17>16>13>11`

`-> 17/16 >16/16>13/16>11/16`

`->C`

3/14 × 5/17 + 11/14 × 5/17 + 12/17 × 5/16 + 12/17 × 11/16

= 5/17 × ( 3/14 + 11/14) + 12/17 × ( 5/16 + 11/16)

= 5/17 × 1 + 12/17 × 1

= 5/17 + 12/17

= 1

3/14 × 5/17 + 11/14 × 5/17 + 12/17 × 5/16 + 12/17 × 11/16

= 5/17 × ( 3/14 + 11/14) + 12/17 × ( 5/16 + 11/16)

= 5/17 × 1 + 12/17 × 1

= 5/17 + 12/17

= 1