Answer:
it should be 628.32 I'm not sure if I'm correct
u = 7
Step-by-step explanation:
-21 + 7u = 28
add 28 to both sides
7u = 49
divide by 7
the Prime Factors of 12 are: 2, 2, 3.
Therefore 12 = 2 X 2 X 3.
