Question

2/5 +1

6/7 Nhân 4

3/7 : 2

2: 2/4

3/4 Nhân 2/9 + 1/3

1/4 : 1/3 -1/2

Nhanh mình tk

Answer 1

\(\frac{2}{5}+1=\frac{2+5}{5}=\frac{7}{5}\)

\(\frac{6}{7}.4=\frac{6.4}{7}=\frac{24}{7}\)

\(\frac{3}{7}:2=\frac{3}{7.2}=\frac{3}{14}\)

\(2:\frac{2}{4}=\frac{2.4}{2}=4\)

\(\frac{3}{4}.\frac{2}{9}+\frac{1}{3}=\frac{6}{36}+\frac{1}{3}=\frac{1}{6}+\frac{1}{3}=\frac{1}{2}\)

\(\frac{1}{4}:\frac{1}{3}-\frac{1}{2}=\frac{3}{4}-\frac{1}{2}=\frac{1}{4}\)

Answer 2

2/5 + 1  = 7/5

6/7 x 4 =24 /7

3/7 :2 =1/7

2:2/4 = 4

3/4 x 2/9 + 1/3  = 1/2

1/4 : 1/3 - 1/2 = 1/4