Solution: ∫-(4m-1) > 0 ∴ 4m-1< 0 ∴4m<； 1 ∴m<； 1/4 In fact, we can sum up experience or methods from a question itself:

If both sides of inequality add and subtract a number at the same time; Multiplying or dividing by a positive number at the same time will not change the direction of the symbol. If both sides of the inequality are multiplied or divided by a negative number at the same time, the direction will change (for example, > will become.