Lindsay is 555 years younger than Mark. Seven years ago, the sum of their ages was 313131. Let lll be Lindsay's age and let mmm be Mark's age. Which system of equations represents this situation?

Step-by-step explanation:

Given that 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.

From the given Lindsay is 5 years younger than Mark.

We can write it as

l=m-5

From given "Seven years ago, the sum of their ages was 31".

It can be written as

( l - 7 ) + (m- 7) = 31

step-by-step explanation:

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42.4

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