Question

 Вычислите 6/7*8/9,  4/9*27/16, 13/10*100/39 45/34*17/15

Answer 1

6/7*8/9=6*8/7*9=48/63
4/9*27/16=4*27/9*16=2/3
13/10*100/39=13*100/10*39=130/39
45/34*17/15=45*17/34*15=51/34