Question 1107670
02. 3x=7+y
5x=9y+41
sol:
     3x=7+y
     3x-y=7     equ:1
     5x=9y+41
     5x-9y=41   equ:2
 multipy equ:1 by 9 and then subtract equ:2 from in it
    9( 3x-y=7) => 27x-9y=63
    1( 5x-9y=41)=>5x-9y=41
                  - +  _
           22x=22
          x=1