Answer:
-4ab+-4a+-3
Explanation:
(5ab-4a-8)-(9ab-5)
distribute the negative sign
=5ab-4a-8+-1(9ab)+(-1)(-5)
=5ab+-4a+-8+-9ab+5
combine like terms
=(5ab+-9ab)+(-4a)+(-8+5)
=-4ab+-4a+-3
-4a-4ab-3
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