40x+2000-50x=18.4 求x
问题描述:
40x+2000-50x=18.4 求x
2分中内要
怎么算的出x
答
40x+2000-50x=18.4
40x+2000-50x+50x-40x=18.4+50x-40x
2000=18.4+10x
10x=2000-18.4
10x=1981.6
x=198.16