解方程。 (1)5x-0.5=8 (2)(x- 4.6)×2.3 =9.338 (3)3x-1.45=2x+1.45...

2024-12-17 07:36:01
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回答1:

(1)5x-0.5=8 
               5x=8.5
                 x=1.7
(2)(x- 4.6)×2.3 =9.338 
                          x-4.6=4.06
                                x=8.66
(3)3x-1.45=2x+1.45 
            3x-2x=1.45+1.45
                   x=2.9

(4)3.5x+x-14=18.4
                  4.5x=18.4+14
                  4.5x=32.4
                       x=7.2