x-(50%+12)-[x-50%x+12]50%+8=18的答案等于多少
问题描述：
x-(50%+12)-[x-50%x+12]50%+8=18的答案等于多少
答
x-12.5-0.25x-6+8=18
x-0.25x=18-8+6+12.5
0.75x=28.5
x=28.5÷0.75
x=38