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7x-1/2[x-1/2(x-1)]=2/3(x-1)我得-5/73对吗如题7x-1/2[x-1/2(x-1)]=2/3(x-1)42x-3[x-1/2(x-1)]=4(x-1)42x-3/2x-3/2=4x-436.5x=-2.5x=-5/73
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7x-1/2[x-1/2(x-1)]=2/3(x-1)我得-5/73对吗如题
7x-1/2[x-1/2(x-1)]=2/3(x-1) 42x-3[x-1/2(x-1)]=4(x-1) 42x-3/2x-3/2=4x-4 36.5x=-2.5 x=-5/73
7x-1/2[x-1/2(x-1)]=2/3(x-1) 42x-3[x-1/2(x-1)]=4(x-1) 42x-3/2x-3/2=4x-4 36.5x=-2.5 x=-5/73
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对,很聪明嘛.
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