Răspuns:
Explicație pas cu pas:
(5*2 2/5-8 3/22):42 1/2=
(5*12/5-179/22):85/2=
(12-179/22)*2/85=
(264/22-179/22)*2/85=
85/22*2/85=
1/11
[(5×5+2)/5-(8×22+3)/22]:(42×2+1)/2=(25/5-179/22)×2/85
=(25×22-179×5)/(5·22)×2/85=(550-895)/11×17=345×17/11=533,(18)
