Question

12:(5-2)+10:(5-3)-2.[6-3.(10-8)]

Answer 1

12:(5-2)+10:(5-3)-2.[6-3.(10-8)]
Resolvemos los paréntesis
12:(3) + 10:(2) - 2 . [6 - 3 . (2)]
Divisiones y multiplicaciones
4 + 5 - 2.[6 - 6]
4 + 5 - 2.0
4 + 5 - 0
9