X0.55+10.8=(X+1)*0.6

分类: 作业答案 • 2022-04-25 15:49:59

问题描述：

X*0.55+1*0.8=(X+1)*0.6

答

0.55x+0.8=（x+1）0.6
0.55x+0.8=0.6x+0.6
0.6x-0.55x=0.8-0.6
0.05x=0.2
x=4

X*0.55+1*0.8=(X+1)*0.6