Answer:
x = 5 , y = -1
Step-by-step explanation:
x + 2y = 3........(equation 1)
x - y = 6..........(equation 2)
make x the subject of the formula in (equation 1)
x = 3 - 2y
substitute for x in (equation 2)
3x - y = 6
(3- 2y) - y = 6
3 - 2y - y = 6
3 - 3y = 6
-3y = 6 - 3
[tex] \frac{ - 3y}{ - 3} = \frac{3}{ - 3} [/tex]
[tex]y = - 1[/tex]
substitute for y in (equation 1)
x = 3 - 2y
[tex] \times = 3 - 2( - 1)[/tex]
x = 5
