Answer:
all work is pictured and shown
48 books
1 yard = 36in
2 yard = 72in
72 / 1.5 = 48
<h3>
Answer: x = 11</h3>
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Work Shown:

Those are the two possible solutions
. We need to check each possible solution.
Plug in x = 11 then simplify. If we get the same number on both sides, then x = 11 is confirmed.

We get 11 on both sides, so the solution x = 11 is confirmed.
Repeat for x = 6 as well

We do not get the same thing on both sides, so x = 6 is not a solution. We consider this extraneous.