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Jacob is seven years younger than twice Elizabeth's age.  The sum of three times Jacob's age and two times Elizabeth's te is 19,  How old is Jacob?

 May 21, 2021
 #1
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2𝑥−7=19

 

i guess

 May 21, 2021
 #2
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we can say Jacob's age is J, and Elizabeth's age is E. this means

2E-7=J

3J+2E=19

subtract the 1st equation from the secnd:

3J+7=19-J

4J=12

J=$\boxed{3}$

 May 21, 2021

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