Question

Brainliest! Please help! :O

Answer 1

Answer:

Subtraction

Step-by-step explanation:

429 = N + 30

-30          -30

399 = N

I hope this helps!

Answer 2

Answer:

Subtract

Step-by-step explanation:

$429=N+30$

$\mathrm{Switch\:sides}$

$N+30=429$

$\mathrm{Subtract\:}30\mathrm{\:from\:both\:sides}$

$N+30-30=429-30$

$\mathrm{Simplify}$

$N=399$

~lenvy~