Verified Answer :

4-4+42-6m=0
42=6m
m=42/6
m=7

hope helped

4+6(7-m)=4
Opening the brackets;
4+42-6m=4
46-6m=4
Putting like terms together;
46-4=6m
42=6m
m=\(\frac{42}{6}\)
m=7