a) \(\dfrac{3}{7}\)

b)\(\dfrac{9}{4}\)

c)\(\dfrac{1}{3}\)

d)\(\dfrac{41}{32}\) 

e)\(\dfrac{73}{60}\)

a,3/7

b,9/4

c,1/3

d,41/32

e,73/60

bạn ghi + - x : nhá

hỏi google phay

Hỏi gg đi khó lắm

4/5   +    3/10   -    1/5    x  6   :    4/7

=11/10   -    1/5    x   6    :   4/7

= 9/10  x  6  : 4/7

=   27/5   :  4/7 

=   189/20

chúc hok tốt

\(=\dfrac{3}{7}\left(\dfrac{8}{5}-\dfrac{3}{5}\right)-\dfrac{1}{7}\cdot3=\dfrac{3}{7}\cdot1-\dfrac{3}{7}=0\)

\(2-\dfrac{3}{4}x\dfrac{8}{5}+\dfrac{1}{2}\)

\(=2-\dfrac{24}{20}+\dfrac{1}{2}\)

\(=2-\dfrac{24+10}{20}\)

\(=\dfrac{2}{1}-\dfrac{34}{20}=\dfrac{40-34}{20}=\dfrac{6}{20}=\dfrac{3}{10}\)

\(2-\dfrac{3}{4}\times\dfrac{8}{5}+\dfrac{1}{2}=\dfrac{2\times20}{1\times20}-\dfrac{24}{20}+\dfrac{1\times10}{2\times10}\\ =\dfrac{40-24+10}{20}=\dfrac{26}{20}=\dfrac{13}{10}\)

a) 72/45 x 35/36= 8/5 x 35/36 =280/180=14/9.

b)1/2:3/4+1/6:3/4 =(1/2+1/6) : 3/4 =8/12:3/4 = 24/36=2/3

c) 2/3x4/5+1/3=2/3+1/3x4/5+1/3=4/3x4/15=16/45.

Nếu sai thông cảm cho mình nhé. Bạn ko k cũng ko sao đâu.

Bạn ko k cũng ko sao đâu.

19/36 + 5/4*1/3 = 17/18

\(\frac{19}{36}\)+ \(\frac{5}{4}\)x \(\frac{1}{3}\)

= \(\frac{19}{36}\)+ \(\frac{5}{12}\)

=\(\frac{19}{36}\)+\(\frac{15}{36}\)

= \(\frac{34}{36}\)= \(\frac{17}{18}\)