Ex 8, tot ce e ne incercuit ( a,c )

Răspuns:
..8- a
(5/6+3/4×24/19-2/3-1/6)×4/3
(5×2/12+3×3/12)×24/19-(4/6-1/6)×4/3
(10/12+9/12)×24/19-3/6×4/3
19/12×24/19-12/18
24/12-2/3
2-2/3
(6-2)/3
4/3