Question

quais são as somas algebricas

 

 a)-5+(2-4)-(7-1)

b)(-5+3)-(5-9)+(8-1)-11

c)30+[-16-(-7+10)]

d)-10-[11+(-10-6)+1]

e)9-(-1)-[21-(-13-(3+25)]

i)11+[-17-(22+16)+(29)]-(-46+54)

Answer 1

a)-5+(2-4)-(7-1) = -5 -2 - 6 = -13

b)(-5+3)-(5-9)+(8-1)-11  = -2 + 4 + 7 - 11 = -2

c)30+[-16-(-7+10)] = 30 - 16 - 3 = 11

d)-10-[11+(-10-6)+1] = -10 - 11 -16 + 1 = -26

e)9-(-1)-[21-(-13-(3+25)] = 9 + 1 - 21 + 13 - 28 = -26

i)11+[-17-(22+16)+(29)]-(-46+54) = 11 - 17 + 38 + 29 - 8 = 31