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求未知数x.x+49x=518;6.5:0.15=x:48%

题目详情
求未知数x.  
x+
4
9
x=
5
18
;                                  6.5:0.15=x:48%

4
9
x=
5
18
;                                  6.5:0.15=x:48%
4
9
4499
5
18
;                                  6.5:0.15=x:48%
5
18
551818
▼优质解答
答案和解析
(1)x+
4
9
x=
5
18

         
13
9
x=
5
18

     
13
9
13
9
=
5
18
÷
13
9

            x=
5
26

(2)6.5:0.15=x:48%
        0.15x=6.5×48%
  0.15x÷0.15=3.12÷0.15
            x=20.8
4
9
444999x=
5
18

         
13
9
x=
5
18

     
13
9
13
9
=
5
18
÷
13
9

            x=
5
26

(2)6.5:0.15=x:48%
        0.15x=6.5×48%
  0.15x÷0.15=3.12÷0.15
            x=20.8
5
18
555181818
         
13
9
x=
5
18

     
13
9
13
9
=
5
18
÷
13
9

            x=
5
26

(2)6.5:0.15=x:48%
        0.15x=6.5×48%
  0.15x÷0.15=3.12÷0.15
            x=20.8
13
9
131313999x=
5
18

     
13
9
13
9
=
5
18
÷
13
9

            x=
5
26

(2)6.5:0.15=x:48%
        0.15x=6.5×48%
  0.15x÷0.15=3.12÷0.15
            x=20.8
5
18
555181818
     
13
9
13
9
=
5
18
÷
13
9

            x=
5
26

(2)6.5:0.15=x:48%
        0.15x=6.5×48%
  0.15x÷0.15=3.12÷0.15
            x=20.8
13
9
131313999x÷
13
9
=
5
18
÷
13
9

            x=
5
26

(2)6.5:0.15=x:48%
        0.15x=6.5×48%
  0.15x÷0.15=3.12÷0.15
            x=20.8
13
9
131313999=
5
18
÷
13
9

            x=
5
26

(2)6.5:0.15=x:48%
        0.15x=6.5×48%
  0.15x÷0.15=3.12÷0.15
            x=20.8
5
18
555181818÷
13
9

            x=
5
26

(2)6.5:0.15=x:48%
        0.15x=6.5×48%
  0.15x÷0.15=3.12÷0.15
            x=20.8
13
9
131313999
            x=
5
26

(2)6.5:0.15=x:48%
        0.15x=6.5×48%
  0.15x÷0.15=3.12÷0.15
            x=20.8
5
26
555262626
(2)6.5:0.15=x:48%
        0.15x=6.5×48%
  0.15x÷0.15=3.12÷0.15
            x=20.8