Question

3/7x4/5+3/7x2/5-3/7x1/5

Answer 1

3/7(4/5+2/5-1/5=3/7x1/5=3/35

Answer 2

3/7*4/5+3/7*2/5-3/7*1/5=3/7

đúng thì k cho mình nha

Answer 3

\(\frac{3}{7}.\frac{4}{5}+\frac{3}{7}.\frac{2}{5}-\frac{3}{7}.\frac{1}{5}=\frac{3}{7}\left(\frac{4}{5}+\frac{2}{5}-\frac{1}{5}\right)\)

                                               \(=\frac{3}{7}.1\)

                                                =\(\frac{3}{7}\)