Question

a) (-3-8)+(-6-10) b) -5+5-8+8-9 c) (-10:2)+(+7.5) d) -23+(-9+5)-6 e) 72:9)+(63:7) f) (+81:9)-(10:2)​

Answer 1

Resposta:

a) (-3-8)+(-6-10) = -11-16= -27

b) -5+5-8+8-9= -9

c) (-10:2)+(+7.5) = -5+7.5= 2.5

d) -23+(-9+5)-6 = -23-4-6= -33

e) (72:9)+(63:7)= 8+9=17

f) (+81:9)-(10:2)​= 9-5=4