How do you solve this problem using substitution or elimination?

Three times the larger of two numbers is equal to 4 times the smaller. The sum of the numbers is 21. Find the numbers.

Question

29 September, 04:41

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Answers (1)

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Kolten Lloyd · Answer 1

3x=4y

x+y=21

x = 21-y

3 (21-y) = 4y

63-3y=4y

63=7y

y=9

x+y=21

x+9=21

x=12

answer is (12, 9)

How do you solve this problem using substitution or elimination?Three times the larger of two numbers is equal to 4 times the smaller. The sum of the numbers is 21. Find the numbers.