Answer:
-3
Step-by-step explanation:
2/5(w+5)=4/5
multiply 2 with w, and 2 with 5
2w/5+10/5=4/5
(2w+10)/5=4/5
cross multiply 4 with 5 and 5 with 2w+10
5(2w+10)=20
10w+50=20
10w=20-50
10w=-30
w=-30/10
w=-3