9/12=6/8=3/49/12约分,分子分母分别除以3即得3/46/8约分,分子分母分别除以2即得3/4总之这类题目约分就好了,化成最简形式
因为9/12=(9÷3)/(12÷3)=3/46/8=(6÷2)/(8÷2)=3/4所以9/12=6/8=3/4