Lindsay is 5 years younger than Mark. Seven years ago, the sum of their ages was
31.
le...
Mathematics, 10.04.2020 23:54 payshencec21
Lindsay is 5 years younger than Mark. Seven years ago, the sum of their ages was
31.
let l be Lindsay's age and let m be Mark's age. Which system of equations represents this situation?
lβ7=(mβ7)+5
l+m=31
l=m+5
(lβ7)+(mβ7)=31
lβ7=(mβ7)β5
l+m=31
l=mβ5
(lβ7)+(mβ7)=31
Answers: 1
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