Question

сделайте плиз!!!!!!!!!!

Answer 1

А) 2 1/7*3 1/9=15/7*28/9=5/1*4/3=20/3=6 2/3
Б) 3/7*7/9=1/1*1/3=1/3
В) 5/8*1 13/15*2 2/7=5/8*28/15*16/7=5*28*16/8*15*7=1*4*2/1*3*1=8/3=2 2/3