The common method to solve binary linear equations is to add or subtract elimination elements into elimination elements.

This problem can be solved by addition, subtraction and elimination:

3x-2y=-2 ——①

7x-y= 18——②

②*2-①: 1 1x=38 solution: x = 38/1.

Substituting x=38/ 1 1 into equation 2 gives y = 68/1.