0.9x-27+13=67怎么解,火速!
问题描述：
0.9x-27+13=67怎么解,火速!
答
0.9x-27+13=67
0.9x = 67 + 27 - 13
0.9x = 94 - 13
0.9x = 81
x = 81 ÷ 0.9
x = 90