Answer:
[tex]w = 28[/tex]
Step-by-step explanation:
[tex]10(w-4) = 4(w+4)+4w[/tex]
1. distribute
[tex]10w - 40 = 4w +16 +4w[/tex]
2. collect like terms
[tex]10w -4w - 4w = 40 +16[/tex]
3. solve
[tex]2w = 56[/tex]
:D