Tips & Tricks Given equations, 4x – 9y + 13 = 0 ----(1) 2x + 3y – 13 = 0 ----(2) Multiplying eq. (2) by 2 and subtracting from (1), we get, ⇒ 4x – 9y + 13 – 4x – 6y + 26 = 0 ⇒ 15y = 39 ⇒ y = 39/15 = 2.6 Substituting in (2), ⇒ x = [13 – 3(2.6)]/2 = 2.6 ∴ There is only 1 solution that the given pair of linear equations have