Question

Tinh bang cahc thuan tien

5 x 12 x 3 x 7 / 3x8x7x5

2 x 5 x 4 x 6 / 4 x 3 x 5 x 7 =

Answer 1

5 x 12 x 3 x 7 / 3 x 8 x 7 x 5 = 3/2

2 x 5 x 4 x 6 / 4 x 3 x 5 x 7 = 4/7

Answer 2

5 x 12 x 3 x 7 / 3 x 8 x 7 x 5

=5 x 3 x 7 x 12/ 3 x 7 x 5 x 8

= 12/8 = 3/2

2 x 5 x 4 x 6 / 4 x 3 x 5 x 7 

=4/7

Answer 3

\(\frac{5.12.3.7}{3.8.7.5}=\frac{12}{8}=\frac{3}{2}\\ \)

2) \(\frac{2.5.4.6}{4.3.5.7}=\frac{12}{21}=\frac{4}{7}\)