PLZZZZZZZZZZZZZZZZZ HELP ME WITH THIS IT DUE TODAY and explain PLZ!!!!!


1.-(-½ )-3(-2)


2.-20 ÷ (4 − (10 − 8))


3. -(7-9)-2[-5-(-9)]


Evaluate each expressions below.


4.-3x8-2x7-8x9


5. 4[30-(10-2)x3]