已知3a+2b=3,则8-6a-4b=?
已知3a+2b=3,则8-6a-4b=?
其他人气:233 ℃时间:2020-02-15 08:53:55
优质解答
8-6a-4b=8-(6a+4b)=8-2(3a+2b)=8-2×3=2
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