Answer:
Since you want me to answer 3 lb 1 oz - 1 lb 15 oz instead, the answer is 18 oz
Step-by-step explanation:
1.Make y the subject
k = xy
k/x = xy/x
y = k/x
2.Substitute
y = 7/9
y = 0.777......
y = 0.8 (Answer)
To confirm
k = 9 × 0.8
k = 7.2
k = 7 (constant)
Hope it helps☺
