Answer:
The larger number is 51 and the smaller number is 12
Explanation:
Let
x -----> the larger number
y ----> the smaller number
we know that
the larger of two numbers is 15 more than three times the smaller number
-----> equation A
the sum of the two numbers is 63
----> equation B
substitute equation A in equation B and solve for y
Find the value of x
---->
therefore
The larger number is 51 and the smaller number is 12