3x4+2x9-{4+[45-5x(8-2n)+23]:4}=14
12+18-{4+[45-5x(8-2n)+23]:4}=14
18-{4+[45-5x(8-2n)+23]:4}=14-12
18-{4+[45-5x(8-2n)+23]:4}=2
4+[45-5x(8-2n)+23]:4=18-2
4+[45-5x(8-2n)+23]:4=16
4+[45-5x(8-2n)+23]=16x4
4+[45-5x(8-2n)+23]=64
45-5x(8-2n)+23=64-4
45-5x(8-2n)+23=60
45-5x(8-2n)=60-23
45-5x(8-2n)=37
5x(8-2n)=45-37
5x(8-2n)=8
8-2n=8:5
8-2n=1,6
2n=8-1,6
2n=6,4
n=6,4:2
n=3,2
Deci n=3,2.
Sper k te-am ajutat!
