5分之16×(5分之16-3分之16)×6分之31+15分之16

问题描述:

5分之16×(5分之16-3分之16)×6分之31+15分之16

16/5×(16/5-16/3)×31/6+16/15
= 16/5x31/6x(48/15-80/15)+16/15
= 248/15x(-32/15)+16/15
= - 248/15x32/15+240/225
= (-248x32)/225+240/225
= 7694/225