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求未知数x.12:x=18:1412÷(0.5x-1)=6.

题目详情
求未知数x.
12:x=
1
8
1
4
                     12÷(0.5x-1)=6.
▼优质解答
答案和解析
(1)12:x=
1
8
1
4
  
          
1
8
x=12×
1
4

        
1
8
x÷
1
8
=3÷
1
8

            x=24;

(2)12÷(0.5x-1)=6
 12÷(0.5x-1)×(0.5x-1)=6×(0.5x-1)
                      12+6=3x-6+6
                     18÷3=3x÷3
                         x=6.