Надо сравнить > < = с+5+6 с+6+5 d -5+4 d -(5+4) a+5-4 a +(5-4) b-3-2 b-(3-2)
1) с+5+6 = с+6+5
c+11 = c+11
2) d -5+4 > d -(5+4)
d-5+4 = d-1
d -(5+4) = d-5-4=d-9
d-1 > d-9
3) a+5-4 = a +(5-4)
a+5-4=a+1
a+(5-4) = a+1
4) b-3-2 < b-(3-2)
b-3-2=b-5
b-(3-2) = b-3+2=b-1
b-5 < b-1
с+5+6= с+6+5
d -5+4> d -(5+4)
a+5-4= a +(5-4)
b-3-2< b-(3-2)