Hello all,

Please help me find the negation of the following:

1)If a>2 and b<-5, then |a|+ |b| >=7

So, I think this can be rewritten as A= a>2 and b<-5; B=|a|+ |b| >=7

and thus, a>2 and b<-5 and |a| + |b|<7

Though, I'm also confused cause it might be:

If a<2 and b>5 OR |a| + |b| >=7.....so as you guys can tell i'm throughly confused.

2) If the numbers a and b are primes, then the number a+b is composite.

Sort of having the same problem as above.

Thanks in advance.