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I just solved it for you at this link
https://www.algebra.com/algebra/homework/Finance/Finance.faq.question.1097559.html
https://www.algebra.com/algebra/homework/Finance/Finance.faq.question.1097559.html
For your convenience, I copy that solution here one more time.
I added the check, which shows that the solution is correct.
If you have another answer, it is wrong.
Let x be the larger of the two numbers and y be the smaller.
Then the condition gives you these two equations
x = 7y + 19, (1)
3x = 11*(2y) + 19. (2)
Substitute (1) into (2). You will get
3*(7y + 19) = 22y + 19, or
21y + 57 = 22y + 19 ====> y = 57 - 19 = 38.
Then x = 7*y + 19 = 7*38 + 19 = 285.
Answer. The larger number is 285. The smaller number is 38.
Check. Check eq(1): 7*y+19 = 7*38+19 = 285 = x. ! Correct !
Check eq(2): 3x = 3*285 = 11*2*38+19 = 11*(2y)+19. ! Correct !