1.75x-x=0.375这么做

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1.75x-x=0.375这么做1.75x-x=0.375这么做1.75x-x=0.375这么做1.75x-x=0.375(1.75-1)x=0.3750.75x=0.375x=0.375÷0.75x

1.75x-x=0.375这么做
1.75x-x=0.375这么做

1.75x-x=0.375这么做
1.75x-x=0.375
(1.75-1)x=0.375
0.75x=0.375
x=0.375÷0.75
x=0.5

1.75x-x=0.375
0.75x=0.375
x=0.375/0.75
x=0.5

(1.75-1)x=0.375
x=0.375/0.25
x=1.5

依题意得-0.75x=0.375,所以x=-0.5