Question

2/5 x 3/5 cộng 4/7 : 1/3 - 2/7

 

Answer 1

292/175

Answer 2

\(\frac{2}{5}\times\frac{3}{5}+\frac{4}{7}:\frac{1}{3}-\frac{2}{7}\)

\(=\frac{6}{25}+\frac{12}{7}-\frac{2}{7}\)

\(=\frac{6}{25}+\frac{10}{7}\)

\(=\frac{292}{175}\)

k tớ nha

Answer 3

sẽ bằng số \(\frac{256}{125}\)

k nha cảm ơn

Answer 4

292/175

Answer 5

\(\frac{2}{5}.\frac{3}{5}+\frac{4}{7}:\frac{1}{3}-\frac{2}{7}\)

\(=\frac{6}{25}+\frac{12}{7}-\frac{2}{7}\)

\(=\frac{6}{25}+\frac{10}{7}\)

\(=\frac{292}{175}\)