题目内容

破解密码。(解方程)
(1)x÷0.6=0.6 (2)3.5x+4.1=7.6 (3)4x-3.8=4.6
(4)42.5÷x=3.4 (5)4(x-6)=12 (6)5x-9=16
(1)x÷0.6=0.6
                 x=0.6×0.6
                 x=0.36
(2)3.5x+4.1=7.6
               3.5x=3.5
                    x=1
(3)4x-3.8=4.6
               4x=8.4
                 x=2.1
(4)42.5÷x=3.4
                   x=42.5÷3.4
                   x=12.5
(5)4(x-6)=12
                   4x=36
                     x=9
(6)5x-9=16
            5x=25
              x=5
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