\(1/5+5/12=37/60 \) (tối giản rồi nhé)

\(\dfrac{1}{5}+\dfrac{5}{12}=\dfrac{37}{60}\)

=37/60

\(\dfrac{11}{5}+\dfrac{5}{11}=\dfrac{11\times11+5\times5}{5\times11}=\dfrac{121+25}{55}=\dfrac{146}{55}\)

5 - 2 4 = 5 - 2 2 2 = 5 - 2 2 = 5 . 4 = 5 . 4 = 20

=4/5+1/5=1

\(\dfrac{4}{5}+\dfrac{3}{15}=\dfrac{4}{5}+\dfrac{3:3}{15:3}=\dfrac{4}{5}+\dfrac{1}{5}=\dfrac{5}{5}=1\)

bằng 1

HT

\(\dfrac{3}{15}-\dfrac{5}{35}=\dfrac{1}{5}-\dfrac{1}{7}=\dfrac{7}{35}-\dfrac{5}{35}=\dfrac{2}{35}\)

1/5-1/7= 7/35-5/35=2/35

3/15 - 5/35 = 1/5 - 1/7 = 7/35 - 5/35 = 2/35

`3/15 + 5/25`

`= 1/5 + 1/5`

`=(1+1)/5`

`=2/5`

`3/15+5/25`

`=(3:3)/(15:3)+(5:5)/(25:5)`

`=1/5+1/5`

`=2/5`

`#``\text{Lócc}`

Rút gọn rồi tính:                                                                                                                                               \(a.\frac{16}{24}-\frac{1}{3}=\frac{2}{3}-\frac{1}{3}=\frac{1}{3}\)

\(b.\frac{4}{5}-\frac{12}{60}=\frac{4}{5}-\frac{1}{5}=\frac{3}{5}\)

Tính rồi rút gọn:

\(a.\frac{17}{6}-\frac{2}{6}=\frac{15}{6}\)

\(b.\frac{16}{15}-\frac{11}{15}=\frac{5}{15}=\frac{1}{3}\)

\(c.\frac{19}{12}-\frac{13}{12}=\frac{6}{12}=\frac{1}{2}\)

1a2/3-1/3=1/3            c4/5-1/5=3/5             tinh roi rut gon 17/6-2/6=15/6=5/2             16/15-11/15=5/15=1/3           19/12-13/12=6/12=1/2

chuc bn hoc tot

lớp 1 à cu

=1/2+1/3=5/6

\(\dfrac{1}{2}+\dfrac{1}{3}=\dfrac{5}{6}\)

\(=\dfrac{1}{2}+\dfrac{1}{3}=\dfrac{5}{6}emnhé\)

3/15 - 5/35 

= 1/5 - 1/7

= 2/35

3/15-5/35=1/5-5/35=7/35-5/35=2/35

\(\frac{3}{15}-\frac{5}{35}=\frac{1}{5}-\frac{1}{7}=\frac{7}{35}-\frac{5}{35}=\frac{2}{35}\)

 \(\dfrac{3}{5}+\dfrac{1}{2}-\dfrac{7}{10}=\dfrac{6}{10}+\dfrac{5}{10}-\dfrac{7}{10}=\dfrac{11}{10}-\dfrac{7}{10}=\dfrac{4}{10}=\dfrac{2}{5}\)

\(\dfrac{4}{7}:\dfrac{8}{11}=\dfrac{4}{7}\times\dfrac{11}{8}=\dfrac{44}{56}=\dfrac{11}{14}\)

\(\dfrac{6}{10}+\dfrac{5}{10}-\dfrac{7}{10}=\dfrac{4}{10}=\dfrac{2}{5}\)

\(\dfrac{4}{7}x\dfrac{11}{8}=\dfrac{44}{56}=\dfrac{11}{14}\)

\(\dfrac{3}{5}+\dfrac{1}{2}-\dfrac{7}{10}=\dfrac{6}{10}+\dfrac{5}{10}-\dfrac{7}{10}=\dfrac{4}{10}=\dfrac{2}{5}\)

\(\dfrac{4}{7}:\dfrac{8}{11}=\dfrac{4}{7}\times\dfrac{11}{8}=\dfrac{44}{56}=\dfrac{11}{14}\)