Вычислите (3/4+1/5)*5/19 (12 1/3-7 3/4)*6/11

Question

Вычислите
(3/4+1/5)*5/19 (12 1/3-7 3/4)*6/11

Answer 1

а  3/4+1/5=19/20      б 19/20*5/19=1/4

а 12 1/3-7 3/4=37/3-31/4=148/12-93/12=55/12   б 55/12*6/11=5/2=2  1/2