need help before 7:30pm . with questions 23-26 and i have to show my work

23) 3 + (a/3) =7
-3 -3
(a/3) = 4
x3 x3
a = 12
24) -1 + (n/3) = 1
+1 +1
(n/3) = 2
x3 x3
n = 6
25) (9+k/3) =3
x3 x3
9 + k = 9
-9 -9
k = 0
26) (x-3/ 22)= -1
x22 x22
x-3= -22
+3 +3
x= -19