Question

Tính bằng cách thuận tiện nhất.

2/15 * 3/8 + 3/8 * 2/3 + 3/8 : 5

Answer 1

2/15 x 3/8 + 3/8 x 2/3 + 3/8 : 5

= 2/15 x 3/8 + 3/8 x 2/3 + 3/8 x 1/5

= 3/8 x ( 2/15 + 2/3 + 1/5 )

= 3/8 x 1

= 3/8

~ Hok tốt ~

#Minh#

Answer 2

\(\frac{2}{15}\cdot\frac{3}{8}+\frac{3}{8}\cdot\frac{2}{3}+\frac{3}{8}:5\)

\(=\frac{3}{8}\cdot\left(\frac{2}{15}+\frac{2}{3}+1\right):5\)

\(=\frac{3}{8}\cdot\frac{9}{5}:5=\frac{27}{100}\)