Answer:
We know nothing about Dylan so we can not write an expression about dylans weight.
Explanation:
B- Bruce's Weight
A- Alan's Weight
B-A= H
Where H is how many more pounds that Bruce weighs than Alan.
Bruce's weight in terms of Dylan's weight is 3d-12.
Alan's weight in terms of Dylan's weight is 2d+3
So, the expression (3d-12) -(2d+3) represents how much more Bruce weighs than Alan.
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