Question

Calcule expressões
a) 14:2+(13-(4.2+1))
b) (9.(12-4)+2.(8-6)).2-20
c) 50-3.(7+8:4-(20-3.(9-5))

Por favor me ajudem !!

Answer 1

14:2 + (13-9)
7+4
11

(9.(12-4)+2.(8-6)).2-20
(9.8+2.2).2-20
(9.8+2.2).2-20
(72+4).2-20
76.2-20
152-20
132


50-3.(7+8:4-(20-3.(9-5))
50-3.(7+8:4-(20-3.4)
50-3.(7+8:4-(20-12)
50-3.(7+8:4-8)
50-3.(7+2-8)
50-3.1
50-3
47