Question

if (a+b)+c=a+(b+c),then check whether the sum of three consecutive odd number begins with 23 is same?

Answer 1

yes ,as 3 consecutive odd number are 23,25,27
now (a+b)+c=a+(b+c)
(23+25)+27=23+(25+27)
48+27=23+52
75=75
hence proved