Question

me ajudem!!!
calcule
a)-2+4-6+8-20
b)-2[2.(-3)+4:(-2)+(8+2-12)]
c)4.{13-[24:(-6)+8:2+3-1+(25-36)]

Answer 1

a)-2+4-6+8-20
-2-6-20+4+8
-28+12
-16

b)-2[2.(-3)+4:(-2)+(8+2-12)]
-2[-6-2+(-2)]
-2[-10]
20

c)4.{13-[24:(-6)+8:2+3-1+(25-36)]
4×{13-[-4+4+2+(-11)]}
4×{13-[-9]}
4×22
88