Question

a)8/9-5/9=...             

18/25-13/25=...

7/5-4/5=...

36/41-37/41=...

Answer 1

\(\dfrac{8}{9}-\dfrac{5}{9}=\dfrac{3}{9}=\dfrac{1}{3}\)

\(\dfrac{18}{25}-\dfrac{13}{25}=\dfrac{5}{25}=\dfrac{1}{5}\)

\(\dfrac{7}{5}-\dfrac{4}{5}=\dfrac{3}{5}\)

\(\dfrac{36}{41}-\dfrac{37}{41}=-\dfrac{1}{41}\)

Answer 2

\(\dfrac{8}{9}-\dfrac{5}{9}=\dfrac{8-5}{9}=\dfrac{3}{9}=\dfrac{1}{3}\)

\(\dfrac{18}{25}-\dfrac{13}{25}=\dfrac{18-13}{25}=\dfrac{5}{25}=\dfrac{1}{5}\)

\(\dfrac{7}{5}-\dfrac{4}{5}=\dfrac{7-4}{5}=\dfrac{3}{5}\)

\(\dfrac{36}{41}-\dfrac{37}{41}=\dfrac{36-37}{41}\) (câu này hình như lỗi đề em nhé, vì lớp 4 chưa học số âm)

Answer 3

\(\dfrac{8}{9}-\dfrac{5}{9}=\dfrac{3}{9}=\dfrac{1}{3}\)

\(\dfrac{18}{25}-\dfrac{13}{25}=\dfrac{5}{25}=\dfrac{1}{5}\)

\(\dfrac{7}{5}-\dfrac{4}{5}=\dfrac{3}{5}\)

\(\dfrac{36}{41}-\dfrac{37}{41}=\dfrac{-1}{41}\)

Answer 4

3641−3741=−141