Question 926785
Let x,y be the two numbers whose sum is 25
    hence x+y= 25----------------eq(1)
one number is 10 more than other
 hence x-y= 10........................eq(2)
 solve eq(1) and eq(2) to get x, y
 add both equation
              x+y= 25
              x-y= 10
              ________
               2x  = 35
              _________
2x= 35
divie with 2 on both sides
          {{{2x/2 =35/2}}}
           {{{ x= 17.5 }}}
       hence y = 17.5-10 = 7.5
Result : x= 17.5 & y=7.5