33/1.1x +40 =36/0.9x x等于多少
问题描述:
33/1.1x +40 =36/0.9x x等于多少
答
33/1.1x +40 =36/0.9x
(33+44x)/1.1x=40/x
33+44x=44
44x=11
x=11/44
x=1/4