kerja bilangan ganjilnya yahh nomor ganjil aja kerja

1. x=y
x+y = 6
x+x = 6
x ; 3
3+ y = 6
y = 6-3= 3

3. x = 2y+8
2x = y-11
x = 2y+8 ; 2x = 4y+ 16
y-11 = 4y+16
3y =   27
y = 9