👤

calcule o valor das expressões:
a) (-1)×(+10)-20×(-5)+(-3)×(+2)×(-6)=

b) (+2)×(-3)×(+5)+(-30)÷(+6)-(-4)×(-3)=

c) (+24)×(+12)-(+3)×(-4)×(+2)+(-6)×(+5)=

d) (-54)÷(+9)-(+12)×(-3)+(-1)×(-2)×(+8)

e) (+100)÷(-10)+(-6)×(+1)-(-2)×(+4)×(-3)=