Question

19) Efetue as divisões
a) (+9):(-9)
b) (-8):1-8) -
c) 0: (+7)=
d) (-48): (+12)
20) Resolva as seguintes expressões
a) 14 - (-10 + 5+3)
b) 15+1-4-1-5+20)​

Answer 1

19) a) -1

b)

$\frac{8}{7}$

c) 0

d) -4

20) a) 16

b) 26