Question

Tinh 4/5+3/7;  5/6-1/3.  ;4/9×3. ;1/2÷3/2

Answer 1

Bài làm

- \(\frac{4}{5}+\frac{3}{7}\)

= \(\frac{28}{35}+\frac{15}{35}=\frac{43}{35}\)

Answer 2

\(\frac{4}{5}+\frac{3}{7}=\frac{43}{35}\)
\(\frac{5}{6}-\frac{1}{3}=\frac{1}{2}\)
\(\frac{4}{9}.3=\frac{4}{3}\)
\(\frac{1}{2}:\frac{3}{2}=\frac{1}{3}\)