12.6乘以百分之125加3又5分之2除以5分之4加1.4乘以12.5

问题描述:

12.6乘以百分之125加3又5分之2除以5分之4加1.4乘以12.5

12.6乘以百分之125加3又5分之2除以5分之4加1.4乘以12.5
=12.6x1.25+3.4x1.25+14x1.25
=(12.6+3.4+14)x1.25
=30x1.25
=37.5