分数简便运算:128*136/127,
问题描述:
分数简便运算:128*136/127,
除法前面是分子,后面是分母,要写这么算的
答
128*136/127
=(127+1)*136/127
=127*136/127+136/127
=136+1又9/127
=137又9/127对不起,题打错了,是128*126/127128*126/127=(127+1)*126/127=127*126/127+126/127=126+126/127=126又126/127