y = 5x - 134x + 3y = 18
replace Y = 5x - 13into4x + 3y = 184x + 3 (5x - 13) = 184x + 15 - 39 = 184x -24 = 184x = 18 +244x = 42x = 42/4x = 10.5Y = 5(10.5) - 13= 52.5 - 13= 39.5answer: x = 10.5 and y = 39.5