Question

(-5ab-5a-1)-(4ab+3) find the difference

Answer 1

$(-5ab-5a-1)-(4ab+3)$ 

$-5ab-5a-1-4ab-3$ 

$(-5ab-4ab)-5a-1-3$        $Gather \ like \ terms$ 

$-9ab-5a-1-3$ 

$\boxed{\boxed{-9ab-5a-4}}$