Answer:
[tex]n=11.5[/tex]
Step-by-step explanation:
we have
[tex](ny+25.7)+(-45.2y+13.9)=(-33.7y+39.6)[/tex]
Group terms than contain the same variable in the left side of the equation
[tex](ny-45.2y)+(25.7+13.9)=(-33.7y+39.6)[/tex]
Combine like terms in the left side
[tex](ny-45.2y)+(39.6)=(-33.7y+39.6)[/tex]
Simplify
[tex]ny-45.2y=-33.7y[/tex]
[tex]ny=-33.7y+45.2[/tex]
[tex]ny=11.5y[/tex]
Simplify the y
[tex]n=11.5[/tex]