а) (2/3: 4/9)2 б) (2/3)2 : (4/9)2 в) (2/7 * 5/12 : 5/14)2

Question

а) (2/3: 4/9)2 б) (2/3)2 : (4/9)2 в) (2/7 * 5/12 : 5/14)2

Answer 1

а) (2/3:4/9)*2=(2/3*9/4)*2=3/2*2=3

б) (2/3)2 : (4/9)2=4/3:8/9=4/3*9/8=3/2

в) (2/7 * 5/12 : 5/14)*2=(5/42:5/14)*2=(5/42*14/5)*2=1/3*2=2/3