Question

Bài 3: Tính bằng hai cách

a 1/8 x 5/6 + 5/6 x 2/3

b 7/5 x 3/4 - 1/2 x 3/4

c (5/6 + 5/8) x 2/3

Answer 1

a, 5/6 x (1/8x2/3) 

=5/6 x 1/12

=5/72

b,(7/5 - 1/2) x 3/4 

=0,9 x 3/4

=3,06

c,(5/6+5/8) x 2/3

=70/48 x 2/3

=35/36

Answer 2

a, 5/6 x (1/8x2/3) 

=5/6 x 1/12

=5/72

b,(7/5 - 1/2) x 3/4 

=0,9 x 3/4

=3,06

c,(5/6+5/8) x 2/3

=70/48 x 2/3

=35/36