Jawapan

2015-01-31T15:20:07+08:00
SOR=3+m+4=m+7
POR=3(m+4)=3m+12
m+7=n-1
(-2)+7=n-1
5=n-1
5+1=n
n=6
3m+12=6
3m=-12+6
3m=-6
m=-2
Therefore,m=-2 and n=6.
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