Solve: 31−x<4Get rid of the denominators by multiplying both sides of the equation by L.C.M. Every number is divisible by 1.The L.C.M of 3 and 1 is 3Divide both sides by -1 . Solve: 31−x<4Get rid of the denominators by multiplying both sides of the equation by L.C.M. Every number is divisible by 1.The L.C.M of 3 and 1 is 3Divide both sides by -1 .