m+2n=2,3m+4n=8.m+n=?
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m+2n=2,3m+4n=8.m+n=?m+2n=2,3m+4n=8.m+n=?m+2n=2,3m+4n=8.m+n=?因为m+2n=2,3m+4n=8所以(3m+4n)-(m+2n)=2m+2n=2
m+2n=2,3m+4n=8.m+n=?
m+2n=2,3m+4n=8.m+n=?
m+2n=2,3m+4n=8.m+n=?
因为m+2n=2,3m+4n=8
所以(3m+4n)-(m+2n)=2m+2n=2(m+n)=8-2=6
所以m+n=6/2=3
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m+2n=2,3m+4n=8.m+n=?
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m-[n-3m-(m-n)]=?
(m+4)^2+|n+3|=01/2m-n