Question

7abc,-5 abc 9 abc,-8 abc​

Answer 1

$\sf = 7abc + (-5 abc) + 9 abc + (-8 abc)$

$\sf = 7abc -5 abc + 9 abc -8 abc$

$\sf = 7abc + 9abc -5 abc -8 abc$

$\sf = 16abc + 13 abc$

$= \boxed {\frak{29abc}} \blue \bigstar$

• Hence, the answer is 29abc

Thank you!

@itzshivani