Question

efetue as adiçoes algebricas

Answer 1

a) +3-5+10= +13-5= +8
b) +2-6-5+2= +4-11= -7
c) -5+8-7+9-3= +3-7+9-3= -4+9-3= +5-3= +2
d) -2+4-7+2-12= +2 -7+2-12= -5+2-12= -3-12=-15