解方程①17x-12x=3.5 ②

解方程①17x-12x=3.5 ② 1 4 :x= 1 8 : 1 10 .
2025-12-15 02:48:02
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回答1:

①17x-12x=3.5,
   (17-12)x=3.5,
           5x=3.5,
        5x÷5=3.5÷5,
            x=0.7;
  
   ②
1
4
:x=
1
8
1
10

      
1
8
x=
1
4
×
1
10

  
1
8
1
8
=
1
4
×
1
10
÷
1
8

         x=
1
5