Question

'Efetue as operações.

a)(-1).(-1).(-1).(-1).(-1)=
b)-5+(+3).(+8)=
c)(-6).(+5)-(-4).(+3)=
d)(-5+1).(-8+2)=
e)6-(-6+4).(-5+9)=
f)-3-3.(-3)=

Answer 1

Olá,

Vamos lá,

a)(-1).(-1).(-1).(-1).(-1)= - 1
b)-5+(+3).(+8)= - 5 + 24 = 19
c)(-6).(+5)-(-4).(+3)= - 30 - (-12) = 30 + 12 = 42
d)(-5+1).(-8+2)= -4 . - 6 = 24
e)6-(-6+4).(-5+9)= 6 -( - 2).( 4) = 6 -( - 8) = 6 + 8 = 14
f)-3-3.(-3)= - 3 + 9 = 6