Answer:
At least means... From 45$ above or It should be equal to 45 or More...
7x≥45
x≥45/7
He need to Move at least 7 lawns.
9/12 is the answer to your question
Answer:

Step-by-step explanation:
Take
, note that

hence b divides a. On the other hand, we have that

which tells us that a divides b. Moreover,
.
Wish I could help. If you give me the real problem I will help you.