From the image, I see two mathematical problems that involve working with integers and parentheses. I'll walk you through solving both.

1. Problem (3): $(-1200) - (-378 - 1199)$

   • First, simplify the expression inside the parentheses: $-378 - 1199 = -1577$
   • Now, the problem becomes: $-1200 - (-1577)$
   • Subtracting a negative is the same as adding: $-1200 + 1577 = 377$
   • So, the solution to this is: $377$

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