Solve graphically 2x+y=8and x+2y=7
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2x+y=8.......eqn 1
x+2y=7.......eqn 2
multiply eqn 1by 2
4x+2y=16.....eqn 3
subtract eqn 2 from eqn 3
4x+2y-x-2y=16-7
3x=9
x=3
Putting x=3 in eqn 1
2×3+y=8
y=8-6
y=2
therefore x, y=3, 2
put this on graph
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