Question

X = 4 + y
2x – 3y = 1

Answer 1

We know x = 4 + y (1)

So 2x - 3y = 1

<=> 2.(4 + y) - 3y = 1

<=> 8 + 2y - 3y = 1

<=> 8 - y = 1

<=> y = 8 - 1

<=> y = 7 (2)

move (2) to (1) : x = 7 + 4 = 11

ok done. Thank to me :>