Răspuns :
(642-164):(49+n)=6r4
478:(49+n)=6r4
478=(49+n)x6+4=294+6n+4
6n=478-298=180
n=180:6
n=30
n:3=30:3=10
478:(49+n)=6r4
478=(49+n)x6+4=294+6n+4
6n=478-298=180
n=180:6
n=30
n:3=30:3=10