\(\dfrac{13}{50}+9\%+\dfrac{41}{100}+0,24\)

\(=\dfrac{13}{50}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{6}{25}\)

\(=\dfrac{13}{50}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{12}{50}\)

\(=\left(\dfrac{13}{50}+\dfrac{12}{50}\right)+\left(\dfrac{9}{100}+\dfrac{41}{100}\right)\)

\(=\dfrac{25}{50}+\dfrac{50}{100}\)

\(=\dfrac{25}{50}+\dfrac{25}{50}\)

\(=\dfrac{50}{50}=1\)

\(\dfrac{13}{50}+9\%+\dfrac{41}{100}+0,24\)

\(=\dfrac{26}{100}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{24}{100}\)

\(=\left(\dfrac{26}{100}+\dfrac{24}{100}\right)+\left(\dfrac{9}{100}+\dfrac{41}{100}\right)\)

\(=\dfrac{50}{100}+\dfrac{50}{100}=\dfrac{1}{2}+\dfrac{1}{2}=\dfrac{2}{2}=1\)

\(\dfrac{13}{50}+9\%+\dfrac{41}{100}+0,24\)

\(=0,26+0,09+0,41+0,24\)

\(=\left(0,26+0,24\right)+\left(0,09+0,41\right)\)

\(=0,5+0,5\)

\(=1\)

26%+9%+41%+24%=100%

\(\dfrac{13}{50}+9\%+\dfrac{41}{100}+0,24\)
\(=\dfrac{26}{100}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{24}{100}\)
\(=\left(\dfrac{26}{100}+\dfrac{24}{100}\right)+\left(\dfrac{9}{100}+\dfrac{41}{100}\right)\)
\(=\dfrac{1}{2}+\dfrac{1}{2}\)
\(=1\)

Bài 3

a,26/100+0,009+41/100+0,24

0,26+0,09+0,41+0,24

(0,26+0,24)+(0,09+0,41)

0,5+0,5

=1

b,9+1/4+6+2/7+7+3/5+8+2/3+2/5+1/3+5/7+3/4

(9+6+7+8)+(2/7+5/7)+(1/4+3/4)+(3/5+2/5)+(2/3+1/3)

30+1+1+1+1

=34

Bài 4,5 khó quá mik ko bít lamf^^))

Bài 5: vì \(\dfrac{3}{11}\) = \(\dfrac{3\times5}{11\times5}\) = \(\dfrac{15}{55}\)

Vậy Khi giữ nguyên tử số thì số cần thêm vào mẫu số là: 

              55 - 39 = 16

Đáp số: 16 

Bài 4: a, \(\dfrac{2008}{2009}\) < 1; \(\dfrac{10}{9}\) > 1

           \(\dfrac{2008}{2009}\) < \(\dfrac{10}{9}\)

         b, \(\dfrac{1}{a+1}\) và \(\dfrac{1}{a-1}\)

Ta có: a + 1 > a - 1 ⇒ \(\dfrac{1}{a+1}\) < \(\dfrac{1}{a-1}\)

\(\dfrac{13}{50}+9\%+\dfrac{41}{100}+0,24\)

\(\dfrac{13}{50}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{24}{100}\)

\(\dfrac{13}{50}+\left(\dfrac{9+41+24}{100}\right)\)

\(\dfrac{13}{50}+\dfrac{74}{100}\)

\(\dfrac{26}{100}+\dfrac{74}{100}=\dfrac{100}{100}=1\)

=(13/50+0,24)+(9%+41/100)

=1/2+(9/100+41/100)

=1/2+1/2

=1

\(=\dfrac{26}{100}+\dfrac{9}{100}+\dfrac{41}{100}+\dfrac{24}{100}=\dfrac{100}{100}=1\)

= 26/100 + 9/100 + 41/100 + 24/100

= \(\dfrac{26+9+41+24}{100}=\dfrac{100}{100}=1.\)

Chúc bạn HT

tick mình nha!

1

mình ko ghi đề bài nha

=26%+9%+41%+24%

=(26%+24%)+(9%+41%)

=50%+50%

=100%

tyup0oiuytrqwertyuiopas

A = \(\dfrac{13}{50}\) + 9% + 41/100 + 0,24

A = 0,26 + 0,09 + 0,41 + 0,24

A = (0,26 + 0,24) + ( 0,09 + 0,41)

A = 0,5 + 0,5

A = 1

em cảm ơn cô

\(\frac{13}{50}+9\%+\frac{41}{100}+0,24\)

\(=\frac{13}{50}+\frac{9}{100}+\frac{41}{100}+\frac{24}{100}\)

\(=\frac{13}{50}+\left[\frac{9}{100}+\frac{41}{100}+\frac{24}{100}\right]\)

\(=\frac{13}{50}+\frac{74}{100}=\frac{13}{50}+\frac{37}{50}=1\)

đễ

=26%+9%+41%+24%

=(26%+24%)+(9%+41%)

=50%+50%

=100%