Mathematics, 14.12.2020 23:40 tyheath42
Lian and her younger sister Ella are 4 years apart. The sum of their ages is 20. Let l be Lian’s age in years and let e be Ella’s age in years. The system of linear equations that models the scenario is: l – 4 = e l + e = 20 How old is each sister? Lian is years old and Ella is years old.
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Lian and her younger sister Ella are 4 years apart. The sum of their ages is 20. Let l be Lian’s age...
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