Răspuns :
Răspuns:
a) =7+2-5=4
b) = 8-3-2+8=11
c) = 6+9-7=8
d) = 7-3-2+8=10
e) = 45-54+37= -9+37=28
f) = 58-79-13-19= -21-13-19= -34-19= -53
Răspuns:
a) =7+2-5=4
b) = 8-3-2+8=11
c) = 6+9-7=8
d) = 7-3-2+8=10
e) = 45-54+37= -9+37=28
f) = 58-79-13-19= -21-13-19= -34-19= -53