Use inverse matrices where possible to find the points of intersection of the pairs of lines:

(i) 2x + 5y = 7 and x + 3y = 11

(ii) 3x – y = -3 and x + 2y = 4

(iii) x + 2y = -6 and 2x + 4y = 5

(iv) -7x – 3y = 2 and x + y = -3