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2014-08-21T12:29:34+03:00
A+b+c+d=88

a=2k+1
b=2k+3
c=2k+5
d=2k+7

2k+1+2k+3 +2k+5+2k+7=88

8k + 16=88

8k=88-16

8k=72

k=9

a=2*9+1=18+1=19
b=2*9+3=18+3=21
c=2*9+5=18+5=23
d=2*9+7=18+7=25


2014-08-21T12:30:03+03:00
A+i+a+3+a+5+a+7=88
4a=88-16
4a=72
a=72:4
a=18
19,21,23,25