1919/1212+51515151/36363636

=19/12+51/36

=3

bang 3

3 nha bn

=\(\frac{19}{12}\)+ \(\frac{51}{36}\)

= 3

1919/1212 + 51515151/36363636 = 3.

Ai tk cho mình mình tk lại.

bằng 3 nhé

=19/12+17/12=3

\(\frac{1919}{1212}\)+\(\frac{51515151}{36363636}\)

=\(\frac{1919:101}{1212:101}\)+\(\frac{51515151:1010101}{36363636:1010101}\)

=19/12+51/36

=3

Ai nhanh mình tk cho 

thank you

19/12+17/12=36/12=3

\(\frac{1919}{1212}\)+ \(\frac{51515151}{36363636}\)= \(\frac{1919:101}{1212:101}\)+ \(\frac{51515151:1010101}{36363636:1010101}\)= \(\frac{19}{12}\)+ \(\frac{51}{36}\)= \(3\)

\(\frac{1919}{121212}+\frac{51515151}{36363636}\)

\(=\frac{19.101}{12.10101}+\frac{51.1010101}{36.1010101}\)

\(=\frac{19}{12}+\frac{51}{36}\)

\(=\frac{19}{12}+\frac{17}{12}\)

\(=\frac{36}{12}=3\)

\(\frac{121212+12121212-1212}{363636-36363636-3636}=\frac{12\left(111111+11111111-1111\right)}{36\left(111111+11111111-1111\right)}=\frac{12}{36}=\frac{1}{3}\)

1/3 nha

\(\frac{1}{3}\)

chúc ban hk tốt!!(k cho tui nhé)

Ta có: \(A=\frac{432143214321}{999999999999}=\frac{4321\times100010001}{9999\times100010001}=\frac{4321}{9999}< \frac{1}{2}\)

\(B=\frac{1212+1212+1212+1212}{1919+1919+1919+1919}=\frac{1212\times4}{1919\times4}=\frac{1212}{1919}=\frac{12\times101}{19\times101}=\frac{12}{19}>\frac{1}{2}\)

Do:\(A< \frac{1}{2}< B\Rightarrow A< B\)

\(\frac{121212+12121212-1212}{363636+36363636-3636}\)

\(=\frac{12.10101+12.1010101-12.101}{36.10101+36.1010101-36.101}\)

\(=\frac{12\left(10101+1010101-101\right)}{36\left(10101+1010101-101\right)}\)

\(=\frac{12}{12.3}\)

\(=\frac{1}{3}\)

Ta có: \(\frac{121212+12121212-1212}{363636+36363636-3636}\)

           =\(\frac{12\times\left(10101+1010101-101\right)}{36\times\left(10101+1010101-101\right)}\)

           =\(\frac{12}{36}\)

           =\(\frac{1}{3}\)

\(\frac{121212+12121212-1212}{363636+36363636-3636}\)

\(=\frac{121212+12121212-1212}{3\times121212+3\times12121212-3\times1212}\)

\(=\frac{121212+12121212-1212}{3\times\left(121212+12121212-1212\right)}\)

\(=\frac{1}{3}\)

_Chúc bạn học tốt_