题目内容

解方程。
(1)x-35%x=7.8 (2)x+160%x=39 (3)58%x-23%x=2.1
(4)80%x=72 (5)28%x+37%x=22.75 (6)x+40%x=8.4
(7):x= (8)49:x= (9)x:=
(10)9.6:x= 4 (11)x:0.6=14.4 (12)0.2:x=
(1)x-35%x=7.8
            65%x=7.8
                   x=12
(2)x+160%x=39
            260%x=39
                    x=15
(3)58%x-23%x=2.1
                  35%x=2.1
                         x=0.6
(4)80%x=72
               x=90
 
(5)28%x+37%x=22.75
                   65%x=22.75
                          x=35
(6)x+40%x=8.4
           140%x=8.4
                   x=6
(7):x=
                x=
(8)49:x=
                x=14
(9)x:=
                x=
(10)9.6:x= 4
                   x=2.4
(11)x:0.6=14.4
                  x=8.64
(12)0.2:x=
                   x=
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