Question

Efetue:

a)(-4)-(-8)-(+16)

b)(+10)+(-15)+(-20)

c)(+80)=(-40)

d)(-4).(-5).(+3)

g) (-4) - (30)

h)+20-4-3+11

i) (-50) : (-5)

Answer 1

a)(-4)-(-8)-(+16) -4+8-16 -20+8 -12 b)(+10)+(-15)+(-20) 10-15-20 10-35 -25 c)(+80)-(-40) 80+40 120 d)(-4).(-5).(+3) 20.3 60 g) (-4) - (30) -4-30 -34 h)+20-4-3+11 20-7+11 31-7 24 i) (-50) : (-5) 10