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

eu fiz no meu caderno, espero ter ajdd

Answer 2

a)14÷2+[13-(4×3)]
14÷2+[13-12]
14÷2+1
7+1
8
b)(9×8+2×2)×2-20
(72+4)×2-20
76×2-20
152-20
132
c) 50-3×(7+8÷4-(17×4))
50-3×(7+8÷4-68)
50-3×(7+2-68)
50-3×9-68
50-27-68
23-68
-45