One more please help. algebra.?

Question

last one<3 pls help.

-1/3 - (-4 1/2)

and

In 2000 the us economy gained 111,349 from the sale of goods exported to mexico. however, the u.s economy lost 135,926 from the sale of goods imported from mexico. In 2000, what was the u.s balance of trade with mexico.

Answer 1

the answer for the top question is 29 over 2 lol it was easy  

Answer 2

subtract it.