Question

 f)45:(-3)-2(5-2+3)-4(7-3+1)

g) (-51).(-3)-5(1+0-3)-(-2).(2).4

h) (-2).(-5).(-2).(-1+79

i) -(3-2.5)-3(7+1-5)+100:(-5)

j) -4(3+8-5)+(-40):4-3(6-7+8-1)

Answer 1

segue essa regra
1)(  )      1)potenci e radia
2)[  ]      2)div emult
3){  }      3)soma e sub

e se orienta nos jogo de sinais
f)45:(-3)-2(5-2+3)-4(7-3+1)
45:-3-2+3-4+5
15-2+3-4+5
+13+3-4+5
+26-4-5
+22-5=17



g)(-51).(-3)-5(1+0-3)-(-2).(2).4=
51.-3-5-9+2.2.4
+156-5-9+16
151-9+16
142+16=158


h) (-2).(-5).(-2).(-1+79
-2.-5.-2.-1+79
-10.-2.-1+79
-20+79=59


i) -(3-2.5)-3(7+1-5)+100:(-5)
-(3-10)-3+3-20
-3-10-3+3-20
-13-3+3-20
-16+3-20
-13-20=-33



j) -4(3+8-5)+(-40):4-3(6-7+8-1)
-4+6-40:4-3-8
+2-10-3-8
-8-3-8
-11-8=-19

espero ter ajudado

 AGORA FAÇA A LETRA F