Răspuns :
(a+b+c+d) :4=14
d=22
(a+b+c+22):4=14
a+b+c+22=14x4
a+b+c+22=56
a+b+c=56-22
a+b+c=34
(34+22):4=56:4=14
d=22
(a+b+c+22):4=14
a+b+c+22=14x4
a+b+c+22=56
a+b+c=56-22
a+b+c=34
(34+22):4=56:4=14
a+b+c+22
_________ = 14
4
a+b+c+22 = 14*4
a+b+c+22 = 56
a+b+c = 56-22
a+b+c = 34
(a+b+c)+22 = 34 + 22 = 56
_________ = 14
4
a+b+c+22 = 14*4
a+b+c+22 = 56
a+b+c = 56-22
a+b+c = 34
(a+b+c)+22 = 34 + 22 = 56