Question

2/7 + 5/7 x 14/25

tính hợp lí làm nhanh giùm mình

Answer 1

\(\frac{2}{7}+\frac{5}{7}.\frac{14}{25}=\frac{2}{7}+\frac{2}{5}=\frac{39}{35}\)

Answer 2

\(\frac{2}{7}+\frac{5}{7}.\frac{14}{25}\)

Answer 3

=\(\frac{24}{35}\)

Answer 4

\(\frac{2}{7}+\frac{5}{7}.\frac{14}{25}\)

\(=\frac{2}{7}+\frac{2}{5}\)

\(=\frac{24}{35}.\)

Chúc bạn học tốt!

Answer 5

\(\frac{2}{7}+\frac{5}{7}\times\frac{14}{25}\)

\(=\frac{2}{7}+\frac{70}{175}\)

\(=\frac{2}{7}+\frac{70}{175}\)

\(=\frac{2}{7}+\frac{2}{5}\)

\(=\frac{10}{35}+\frac{14}{35}\)

\(=\frac{24}{35}\)