1+1=2

ko sai đc

học tốt

- Câu trả lời là 2.

1 + 1 + 2 + 1 + 3 + 1 + 4 + 4 + 5 = 22

Mình nhanh nhất nhé !

1+1+2+1+3+1+4+4+5=22

1 + 1 +2 +1 +3+ 1 +4 + 4 + 5 = 22

mình cũng kb rồi

mink kb rồi

mình kb rồi

1+1-1=1

kb nha

\(=1\)

1 +  1 + 1 = 3 nha bạn.

ai k cho mik mik hứa sẽ ủng hộ lại

mà các bạn phải nhắc mik ko mik quên đấy.

thanks.

1 + 1 -1 :1 x1 = 1

tk mk mk tk lại

=1 nhé

Kết quả bằng 1

XONG

BẰng 3 nhưng bn k mik r nên thôi

1 + 1 + 1 = 3

#)Giải :

  1 + 1 + 1 = 3

       #~Will~be~Pens~#

1 + 2 + 3 + 4 + 5 = 15

= 15

đúng rồi đó

k mk nhế

@.@

1+2+3+4+5

=(1+4)+(2+3)+5

=5+5+5

=15

Hok tốt.

( 1/2 + 1/6 + 1/12 + 1/30 ) : ( 1/3 + 1/6 + 1/12 + 1/ 24 + 1/48 )=(1/1.2 + 1/2.3 + 1/3.4 +1/5.6 ):(1/3.1 +1/3.2 + 1/3.4 + 1/3.8 +1/3.16)=....

\(\left(\frac{1}{2}+\frac{1}{6}+\frac{1}{12}+\frac{1}{30}\right):\left(\frac{1}{3}+\frac{1}{6}+\frac{1}{12}+\frac{1}{24}+\frac{1}{48}\right)\)

\(=\left(\frac{12}{12}+\frac{2}{12}+\frac{1}{12}+\frac{1}{30}\right):\left(\frac{16}{16}+\frac{8}{48}+\frac{4}{48}+\frac{2}{48}+\frac{1}{48}\right)\)

\(=\left(\frac{15}{12}+\frac{1}{30}\right):\frac{31}{48}\)

\(=\left(\frac{225}{180}+\frac{6}{180}\right):\frac{31}{48}\)

\(=\frac{231}{180}:\frac{31}{48}\)

\(=\frac{231}{180}.\frac{48}{31}=\frac{231.24}{90.31}\)

\(=\frac{5544}{2790}\)nếu rút gọn được thì bạn rút gon luôn nhé

Đề ???

\(\left(\frac{1}{2}+\frac{1}{6}+\frac{1}{12}+\frac{1}{20}\right):\left(\frac{1}{3}+\frac{1}{6}+\frac{1}{12}+\frac{1}{24}+\frac{1}{48}\right)\)

\(=\left(\frac{1}{1.2}+\frac{1}{2.3}+\frac{1}{3.4}+\frac{1}{4.5}\right):\left(\frac{1}{1.3}+\frac{1}{2.3}+\frac{1}{3.4}+\frac{1}{4.6}+\frac{1}{6.8}\right)\)

\(=\left(1-\frac{1}{2}+...+\frac{1}{4}-\frac{1}{5}\right):\left[\frac{1}{2}\left(\frac{2}{1.3}+\frac{2}{4.6}+\frac{2}{6.8}\right)+(\frac{1}{2}-\frac{1}{3}+\frac{1}{3}-\frac{1}{4})\right]\)

\(=\left(1-\frac{1}{5}\right):\left[\frac{1}{2}\left(\frac{1}{1}-\frac{1}{3}+\frac{1}{4}-\frac{1}{6}+\frac{1}{6}-\frac{1}{8}\right)+(\frac{1}{2}-\frac{1}{4})\right]\)

\(=\frac{4}{5}:\left[\frac{1}{2}\left(\frac{2}{3}+(\frac{1}{4}-\frac{1}{8})\right)+\frac{1}{4}\right]\)

\(=\frac{4}{5}:\left(\frac{1}{2}.\frac{19}{24}+\frac{1}{4}\right)\)

\(=\frac{4}{5}:\frac{31}{48}\)

\(=\frac{192}{155}\)