Question

[lê thị hà my]

tính nhanh:

a, 47/9+(41/3-26/9)

b.26/15:13/5-1/4

Answer 1

[Mira - Mai]

\(a,\frac{47}{9}+\left(\frac{41}{3}-\frac{26}{9}\right)\)

\(=\frac{47}{9}+\left(\frac{82}{9}-\frac{26}{9}\right)\)

\(=\frac{47}{9}+\frac{56}{9}\)

\(=\frac{103}{9}\)

\(b,\frac{26}{15}:\frac{13}{5}-\frac{1}{4}\)

\(=\frac{26.5}{15.3}-\frac{1}{4}\)

\(=\frac{12}{3}-\frac{1}{4}\)

\(=\frac{4}{1}-\frac{1}{4}=\frac{16}{4}-\frac{1}{4}=\frac{15}{4}\)