Answer:
n = 3.8
Step-by-step explanation:
0.3(n - 5) = 0.4 - 0.2n
Distribute
.3n - 1.5 = .4 - .2n
Add .2n to each side
.3n +.2n -1.5 = .4 -.2 +.2n
.5n -1.5 = .4
Add 1.5 to each side
.5n -1.5 +1.5 = .4+1.5
.5n = 1.9
Divide each side by .5
.5n/.5 = 1.9/.5
n =3.8