Answer
49-147w+133y
or
Possibly impossible to simplify
Step-by-step explanation:
7+7[(6-5y)+6(-3w+4y)-3w??? Where is the ending ]
I assume this meant
7+7[(6-5y)+6(-3w+4y)-3w]
7+7[6-5y+-18w+24y-3w]
7+7[6+-21w+19y]