0.492/((50+6.8x)/(90+15.3x))=0.492如何解x_数学解答

0.492/((50+6.8x)/(90+15.3x))=0.492如何解x

人气：468 ℃　时间：2020-09-04 10:00:47

解答

0.492/【(50+6.8x)/(90+15.3x)】=0.492
(50+6.8x)/(90+15.3x）=1
50+6.8x=90+15.3x
8.5x=-40
x=-80/17