解一下5分之(8x加4)=7加1分之(11x加1)
问题描述:
解一下5分之(8x加4)=7加1分之(11x加1)
答
(8x + 4)/5 = (11x + 1)/ (7 + 1)
8 x (8x + 4) = 5 x (11x + 1)
64x + 32 = 55x + 5
9x + 27 = 0
x = -3