Question

tính bằng cách tuận tiện nhất :

\(\frac{17}{2}\)x \(\frac{3}{5}\)+  \(\frac{3}{5}\)x \(\frac{1}{2}\)+ \(\frac{3}{5}\)

Answer 1

\(\frac{17}{2}\times\frac{3}{5}+\frac{3}{5}\times\frac{1}{2}+\frac{3}{5}\)

\(=\frac{3}{5}\times\left(\frac{17}{2}+\frac{1}{2}\right)\)

\(=\frac{3}{5}\times9\)

\(=\frac{27}{5}\)

Ai Fan anh Kha diem danh

Answer 2

\(\frac{17}{2}\times\frac{3}{5}+\frac{3}{5}\times\frac{1}{2}+\frac{3}{5}\)

\(=\frac{3}{5}\times\left(\frac{17}{2}+\frac{1}{2}+1\right)\)

\(=\frac{3}{5}\times\left(\frac{17}{2}+\frac{1}{2}+\frac{2}{2}\right)\)

\(=\frac{3}{5}\times\frac{20}{2}\)

\(=\frac{60}{10}=6\)

CHÚC BẠN HOK TOT

Answer 3

\(\frac{17}{2}\times\frac{3}{5}+\frac{3}{5}\times\frac{1}{2}+\frac{3}{5}\)

\(=\frac{3}{5}\times\left(\frac{17}{2}+\frac{1}{2}+1\right)\)

\(=\frac{3}{5}\times10\)

\(=6\)

Answer 4

                17/2 x 3/5 + 3/5 x 1/2 + 3/5

= 17/2 x 3/5 + 3/5 x 1/2 + 3/5 x 1

= 3/5 x (17/2 + 1/2 + 1)

= 3/5 x (9 + 1)

= 3/5 x 10

= 6