题目内容

求未知数x。
(1)3×(0.6+x)=4.5 (2)9x-1.8=5.4 (3)x:20%=2.5:1
(4)x:=14:0.6 (5)8x-0.92×5=19 (6)14:x=1.25:0.75
(7)=:x (8)2.5×3-3x=0.75 (9)-14.5=5.5
(1)3×(0.6+x)=4.5
                          3x=4.5-1.8
                            x=0.9
(2)9x-1.8=5.4
               9x=7.2
                 x=0.8
(3)x:20%=2.5:1
                   x=2.5×20%
                   x=0.5
(4)x:=14:0.6
            0.6x=6
                x=10
(5)8x-0.92×5=19
                      8x=19+4.6
                        x=2.95
(6)14:x=1.25:0.75
          1.25x=10.5
                 x=8.4
(7)=:x
                x=
                    x=
(8)2.5×3-3x=0.75
                     3x=7.5-0.75
                       x=2.25
(9)-14.5=5.5
                =20
                  x=160
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网