Question 932886
a,  Anuj's age, b,  Brijesh's age   
5(a-1) = 6(b-1)   0r 5a - 6b = -1
6(a+4) = 7(b+4)
.......
(5a - 6b = -1)
6a - 7b = 4
.........
-7(5a - 6b = -1)
<u>6(6a - 7b = 4)</u>
a = 31, Anuj's age
b = 26, Brijesh's age   {{{ 155 - 6b = -1}}}, {{{ 156= 6b}}}
...
And checking.. in 4 years
6(35) = 7(30) = 210