Question

4/ 5 x 15/11 x 2/9

4/7 x 2/5 + 4/7 x 3/5

(5/7 + 7/8) x 2

2/14 + 3/7 - 3/14 x 2

Answer 1

4/5 x 15/11 x 2/9 = 8/33

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

( 5/7 + 7/8 ) x 2 =  89/28

2/14 + 3/7 - 3/14 x 2 = 1/7 

tk mình nhé, mk nhanh nhất

Answer 2

4/5 x 15/11 x2/9

= 4x15x2/5x11x9

= 4x5x3x2/5x11x3x3

= 8/33

Answer 3

4/7x2/6+4/7x3/5

=4/7x(2/6+3/5)

=4/7x 14/15

=8/15

Answer 4

(5/7+7/8)x2

= 5/7x2+7/8x2

= 10/7+ 7/4

= 89/28