(0.5x+1)+(0.25x+0.5)+(0.125x+2.25)=x怎么解,
问题描述:
(0.5x+1)+(0.25x+0.5)+(0.125x+2.25)=x怎么解,
答
(0.5+0.25+0.125)x+3.75=x
0.875x+3.75=x
x-0.875x=3.75
0.125x=3.75
x=30