Question

elimine os parentes e calcule .a (+3)+(+2) b (+5)+(+1) c (+7)+(+5) d(+2)+(+8) e(+9)+(+4) f (+6)+(+5) g(-3)+(-1) h(-5)+(-1) i(+105)+(+105) j(-280)+(-509) h(-321)+(-30) me ajudem pfvr​

Answer 1

Resposta:

.a (+3)+(+2)= +5

b (+5)+(+1)=+6

c (+7)+(+5) =+12

d(+2)+(+8) =+10

e(+9)+(+4) =+13

f (+6)+(+5) =+11

g(-3)+(-1) =+4 pois -com+ = - e - com -= +

h(-5)+(-1)=+6

i(+105)+(+105)=+210

j(-280)+(-509)=+ 789       pois -com+ = - e - com -= +

h(-321)+(-30)=+ 351         pois -com+ = - e - com -= +