Question

6) Calcule o valor das expressões.
a) (-16):(-4) + 14 =
b) (-7).(-5)+7.(-4)=
c) (-20):( -5 ) + ( +15 ): (-3) =
I
d) (-7)2 + 52 - (+3 )3 =
e) 20-(-4)2 + (-3)2 =​

Answer 1

Resposta:

a) (-16):(-4)+14

=4+14

=18

b)(-7).(-5)+7.(-4)

= 35-28

= 7

c)(-20):(-5)+(15):(-3)

= 4-5

=-1

d)(-7)2+52-(3)3

= -14+52-9

= 29

e)20-(-4)2 +(-3)2

=20-(-8)+(-6)

=20+8-6

=22