Answer:
u = 5
Step-by-step explanation:
9(u+2) = 63
9(5+2) = 63
9(7)=63
u=5
multiply 9 by u and 2 you will get 9u+18=63
subtract 18 from both sides of the equation you will get 9u=45
divide both side by 9 and you will get your answer, u=5
