a, 9.27n=3n
32.33n=3n
32+3n=3n
2+3n=n
n-3n=2
-2n=2
n=-1
bạn nhớ k cho mk nha
b, (23:4).2n=4
(23:22).2n=22
21.2n=22
21+n = 22
1+n=2
n=1
bạn nhớ k cho minh nha
c, 3-2.34.3n=37
3(-2+4+n)=37
32+n=37
2+n=7
n=3
d,2-1.2n+4.2n=9.25
(2-1+4).2n=9.25
(1/2+4).2n=
9/2.2n=9.25
1/2.2n=25
25:2n=1/2
25-n=2-1
5-n=-1
n=6