At the start, the ratio of apples and oranges on sale in a shop was \(\frac{3}{4}\). After 4 oranges were added to the display, the ratio of apples to oranges became \(\frac{9}{13}\). How many apples were there ?

Mọi người có thể cho mình cách giải nữa nhé!!!

The perimeter of a square is \(\frac{4}{5}\)dm. what is the measure of each side?

A) 2 dm      B) 2 cm      C)\(\frac{2}{5}\)dm      D)\(\frac{1}{5}\)cm

the least common denominator of two fractions\(\frac{2}{21}\) and\(\frac{3}{28}\) is

Emma ate \(\frac{3}{5}\)of the carrots in the bag. Jacob ate \(\frac{4}{7}\)of the carrots in the bag. how many carrots could be in the bag?

A) 50      B) 72      C) 70      D) 36

Ai ghi lời giải thì mk sẽ ktic nhé ^-^

\(20\frac{6}{9}\)= ???

kb nha mina !!!

On Internet now, people are arguing about this little math problem so I decided to post this:

Solve:

\(9-3\div\frac{1}{3}+1\)

On Internet now, people are arguing about this little math problem so I decided to post this:

Solve:

\(9-3\div\frac{1}{3}+1\)

Hình thang có đáy bé 15cm và bằng \(\frac{1}{2}\)đáy lớn, đáy lớn gấp 3 lần chiều cao. Tính diện tích hình thang.

giúp mình với.