Please help, I’m sorry if it’s too much

Answer:
7) x=u/10
8) a = - u/12
9) a = U/3 - 2/3
10) z = 0
11) a= n- p + m
12) x = gc/ y
13) a= w/k + v/k
14)x= pn/ m
Step-by-step explanation:
there... hope this helps!! also can i get brainliest? plz and thank you!!