Answers

2014-02-13T16:41:58+01:00
2x+y=7 ----(i)
x-y=2 ------(ii)
from equ (ii)
x=2+y -------(iii)
2(2+y)+ y=7
4+2y+y=7
4+3y=7
3y=7-4
3y=3
ie. y=3/3
y=1
substitute y=1 in equ iii
x=2+y
x=2+1
ie. x=3
that is x=3, y=1
1 1 1