12.27m+0.73n-11.87m+0.07n
=0.4m+0.8n
=0.4*2.5+0.8*12.5
=1+10=11
当m是2.5,n是12.5时,求12.27m+0.73n-11.87m+0.07n的值
当m是2.5,n是12.5时,求12.27m+0.73n-11.87m+0.07n的值
数学人气:272 ℃时间:2020-03-16 16:14:16
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