Answer:
X=4 , Y=3
Step-by-step 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
