3^9m .27^m =3^6 求m的值.
问题描述：
3^9m .27^m =3^6 求m的值.
p:"." =乘号
答
3^9m .27^m =3^6
3^(9m) .3^(3m) =3^6
3^(9m+3m) =3^6
12m=6
m=1/2