60×0.8+1.2×括号里X碱60等于x×0.88怎么解
问题描述:
60×0.8+1.2×括号里X碱60等于x×0.88怎么解
答
60*0.8+1.2*(x-60)=x*0.88
48+1.2x-72=0.88x
1.2x-0.88x=72-48
0.32x=24
x=24/0.32
x=75