解方程120%x-1112X=6.8 &nbsp...

解方程120%x-1112X=6.8 4x+0.4x=70.4 x×(1-14)=3.6 12-45x=110 34×(x-13)=0.
2025-06-27 19:25:57
推荐回答(1个)
回答1:

(1)120%x-

11
12
X=6.8,
              
17
60
x=6.8,
          
17
60
x÷
17
60
=6.8÷
17
60

                 x=24;

(2)4x+0.4x=70.4,
        4.4x=70.4,
   4.4x÷4.4=70.4÷4.4,
           x=16;

(3)x×(1-
1
4
)=3.6,
           x×
3
4
=3.6,
        x×
3
4
÷
3
4
=3.6÷
3
4

              x=4.8;

(4)
1
2
-
4
5
x=
1
10

  
1
2
-
4
5
x+
4
5
x=
1
10
+
4
5
x,
    
1
2
?
1
10
=
1
10
+
4
5
x?
1
10

       
2
5
÷
4
5
=
4
5
x÷
4
5

          x=
1