4.32×15÷12+5.1÷0.8=64.8÷12+6.375=5.4+6.375=11.775
4.32×15÷12+5.1÷0.8=4.32X5/4+5.1X5/4=5/4X(4.32+5.1)=5X9.42/4=5X2.355=11.775
解:4.32×15÷12+5.1÷0.8原式=64.8÷12+0.6375=5.4+0.6375=6.0375