Rearranging the equations, we have

2x – y = - 3 …eq.1

3x – 7y = - 10 …eq.2

To solve these equations, we need to make one of the variables (in both the equations) have same coefficient.

Lets multiply eq.1 by 7, so that variable y in both the equations have same coefficient.

Recalling equations 1 & 2,

2x – y = - 3 [×7

3x – 7y = - 10

⇒ 14x – 7y = - 21

3x – 7y = - 10

On solving the above two equations we get,

⇒ 11x = - 11

⇒ x = - 1

Substitute x = - 1 in eq.1/eq.2, as per convenience of solving.

Thus, substituting in eq.1, we get

2( - 1) – y = - 3

⇒ - 2 – y = - 3

⇒ y = - 2 + 3

⇒ y = 1

Hence, we have x = - 1 and y = 1.