\(\dfrac{48}{19}\)

\(\dfrac{8}{5}\)

48/19

8/5

\(\dfrac{13}{19}+\dfrac{18}{19}+\dfrac{17}{19}=\dfrac{48}{19}\)

\(\dfrac{3}{5}+\dfrac{3}{16}+\dfrac{13}{16}=\dfrac{3}{5}+\left(\dfrac{13}{16}+\dfrac{3}{16}\right)=\dfrac{3}{5}+1=\dfrac{8}{5}\)

\(a,\dfrac{13}{19}+\dfrac{18}{19}+\dfrac{17}{19}=\dfrac{13+18+17}{19}=\dfrac{48}{19}\\ b,\dfrac{3}{5}+\dfrac{3}{16}+\dfrac{13}{16}=\dfrac{3}{5}+\left(\dfrac{3}{16}+\dfrac{13}{16}\right)=\dfrac{3}{5}+\dfrac{16}{16}=\dfrac{3}{5}+1=\dfrac{3}{5}+\dfrac{5}{5}=\dfrac{8}{5}\)

\(a\dfrac{13+18+17}{19}=\dfrac{48}{19}\)

\(b\dfrac{3}{5}+\dfrac{3+13}{16}=\dfrac{3}{5}+1=\dfrac{3}{5}+\dfrac{5}{5}=\dfrac{8}{5}\)

a) 13/19 + 18/19 + 17/19

= (13/19 + 17/19) + 18/19

= 30/19 + 18/19

= 48/19

b) 3/5 + 3/16 + 13/16

= 3/5 + (3/16 + 13/16)

= 3/5 + 1

8/5

- Đặt tính : Viết các chữ số cùng hàng thẳng cột với nhau.

- Tính : Cộng các số lần lượt từ phải sang trái.

12+3=15 , 11 +5=16 , 12+7= 19 , 16+3=19 , 13+4=17 , 16+2= 18 , 7+2=8 , 13+6=19. Kết quả đây nhé!

   3/5 + 3/16 + 13/16

= 3/5 + ( 3/16 + 13/16 )

= 3/5 + 16/16

= 3/5 + 1

= 3/5 + 5/5 

= 8/5

3/5 + 3/16 + 13/16 = 3/5 + 1 = 1 \(\frac{3}{5}\)bạn nhé

nha

3/5 + 3/16 + 6/16

= 3/5 + ( 3/6 + 13/16 )

= 3/5 + 1

= 8/5

Mink nhanh nhất, tk nha

a)\(=\dfrac{16}{13}-\dfrac{3}{15}+\dfrac{6}{13}=\dfrac{22}{13}-\dfrac{3}{15}=\dfrac{96}{65}\)

b)\(=\dfrac{21}{8}-\left(\dfrac{5}{10}+\dfrac{6}{10}\right)=\dfrac{21}{8}-\dfrac{11}{10}=\dfrac{61}{40}\)

c)\(=\dfrac{27}{10}-3-\dfrac{4}{7}--\dfrac{61}{70}\)

d)\(=\dfrac{576}{702}=\dfrac{4}{5}\)

e)\(=\left(\dfrac{20}{15}-\dfrac{12}{15}\right)\times\dfrac{25}{2}=\dfrac{8}{15}\times\dfrac{25}{2}=\dfrac{20}{3}\)

f)\(=\dfrac{24}{12}-\dfrac{4}{12}-\dfrac{6}{12}-\dfrac{2}{12}-\dfrac{3}{12}=\dfrac{9}{12}=\dfrac{3}{4}\)

d) \(=\dfrac{32}{45}x\dfrac{18}{16}=\dfrac{576}{720}=\dfrac{115}{114}\)

e) \(=\left(\dfrac{4}{3}-\dfrac{4}{5}\right)x\dfrac{25}{12}=\dfrac{8}{15}x\dfrac{25}{12}=\dfrac{200}{180}=\dfrac{10}{9}\)

f) \(=\dfrac{2}{1}-\dfrac{1}{3}-\dfrac{1}{2}-\dfrac{1}{6}-\dfrac{3}{12}=\dfrac{24}{12}-\dfrac{4}{12}-\dfrac{6}{12}-\dfrac{2}{12}-\dfrac{3}{12}\)

\(=\dfrac{20}{12}-\dfrac{4}{12}-\dfrac{3}{12}=\dfrac{16}{12}-\dfrac{3}{12}=\dfrac{13}{12}\)

địt con mẹ mày

địt con mẹ bọn onlinemath sex