I will give brainlist to people that answer this iready

9514 1404 393
Answer:
n = -25
Step-by-step explanation:
The next step can be to subtract 2/5n.
[tex]\dfrac{3}{5}n+15=10+\dfrac{2}{5}n\\\\\dfrac{1}{5}n+15=10 \qquad\text{subtract $\dfrac{2}{5}n$}\\\\\dfrac{1}{5}n=-5 \qquad\text{subtract 15}\\\\ \boxed{n=-25} \qquad\text{multiply by 5}[/tex]