how do you solve x + 1/4x = 15.
x + 1/4x = 154/4x + 1/4x = 155/4x = 155x = 60x = 12
x+(1/4)x = 15 // - 15x+(1/4)x-15 = 05/4x-15 = 0 // + 155/4x = 15 // : 5/4x = 15/5/4x = 12