(1) 6x + 4y = 15 (2) 12x - 3y = 10 Multiply (1) by 3 and (2) by 4: (3) 18x + 12y = 45 (4) 48x - 12y = 40 Add the two equations eliminating the 'y' terms: (5) 66x + 0y = 85 => 66x = 85 Solve for 'x' (6) x = 85/66