Question

Ok so I don’t know how to do this

Answer 1

X=4 , Y=3

Explanation:

suppose,

2x-3y=-1...(I) and

y=x-1

or, x-y=1...(ii)

let's do: (ii)×2-(i)

2x-2y=2

2x-3y=-1

(-) (+) (+)

_______

y =3

let's put the value of y in (ii)

x-3=1

or, X=1+3

so, X=4