Try it with some random number, like a=3.
Is "3+0 = 0+3 = 0" true? No.
If you were doing multiplication, then it would be true, but not with addition.
4>-3
-2>-5
1=1
They want to make sure you understand inequalities and know how to use the inequality signs.
Sixteen because if there are eight less tigers than lions at a zoo, then that means you add 8 to get the number of lions
