Question

Solve the following? `" "x + y = 1` `" "x + 3y = 9`

Answer 1

x is -3 and y is 4

Explanation:

Subtracting the equations we get,

`x + y = 1`
`-` `-` `-`
`x +3y=9`

`= -2y= -8`
`= y = 4`

`x = 1-4 = -3`