Can somebody help me answer this question?

Question

1. x+18<-3 (The < has a underscore beneath it)
A.x<-21 (Also, < haves a underscore)
B. X < 21 (Also, < has a underscore)
C. x <-15 (Also, < has a underscore)
D. x<15 (Also, < has a underscore)

Can somebody help me? Gracias!

Answer 1

x+18 <= -3
just as with an equation, subtract 18 from both sides:
x <= -21

Answer 2

Oh! Thanks, Oobleck. I forgot, my teacher did talk about this!