2.7x+(4x×0.6)+【(232-5x)×6.3】=300
2.7x+2.4x+(1461.6-31.5x)=300
5.1x+1461.6-31.5x=300
31.5x-5.1x=1461.6-300
26.4x=1161.6
x=1161.6÷26.4
x=44
2.7x+(4x×0.6)+【(232-5x)×6.3】=300
2.7x+2.4x+(1461.6-31.5x)=300
5.1x+1461.6-31.5x=300
31.5x-5.1x=1461.6-300
26.4x=1161.6
x=1161.6÷26.4
x=44