2x - y = - 1

3x + 5y = 18

What are the order pairs to these equations.

2x - y = - 1 (1)

3x + 5y = 18 (2)

=> 6x - 3y = - 3

6x + 10y = 36

=> - 13y = - 39 = > y = 3

Substitute y into the equation (1)

2x - 3 = - 1 = > 2x = 2 = > x=1

so the oder pairs to these equations is : { 1:3 }