Question

3/2.1/3+1/2                  (1/2-1/3):1/12             5/9.7/13+5/9.9/13-5/9.3/13

Answer 1

a) \(\frac{3}{2}\). \(\frac{1}{3}\)+\(\frac{1}{2}\)

= 1/2 + 1/2

= 1

Mấy bài khác tương tự :)))

Answer 2

a) \(\frac{3}{2}.\frac{1}{3}+\frac{1}{2}=\frac{1}{2}+\frac{1}{2}=1\)

b) \(\left(\frac{1}{2}-\frac{1}{3}\right):\frac{1}{12}=\frac{1}{6}.12=2\)

c) \(\frac{5}{9}.\frac{7}{13}+\frac{5}{9}.\frac{9}{13}-\frac{5}{9}.\frac{3}{13}=\frac{5}{9}.\left(\frac{7}{13}+\frac{9}{13}-\frac{3}{13}\right)=\frac{5}{9}.1=\frac{5}{9}\)