Question

Solve the following system of linear equations of graphically x-y=1 2x+y=8

Answer 1

by elimination method( adding both equations)
x-y +2x+y=1+8
3x=9
x=3
put value of x in equation (i)
3-y=1
y=2

Answer 2

x-y=1, 2x+y=8

x-y=1

2x+y=8

3x=9

x=3÷9

x=3

equation 1 = x-y=1

3-y=1

y=1-3

y=2