Respuesta :

angle46089

Answer:

Subtraction

Step-by-step explanation:

429 = N + 30

-30          -30

399 = N

I hope this helps!

Lenvy

Answer:

Subtract

Step-by-step explanation:

[tex]429=N+30[/tex]

[tex]\mathrm{Switch\:sides}[/tex]

[tex]N+30=429[/tex]

[tex]\mathrm{Subtract\:}30\mathrm{\:from\:both\:sides}[/tex]

[tex]N+30-30=429-30[/tex]

[tex]\mathrm{Simplify}[/tex]

[tex]N=399[/tex]

~lenvy~