Answer:
Anna Ellie's age is (59.5) and Elsa's is 59.5+1 =60.5.
Explanation:
Let x: age of Anna Ellie. Since Elsa's and Anna's age are consecutive numbers, Elsa's age can be expressed as [text]x + 1[\tex].
The sum of their ages expressed in equation form:
![x + x+1=120](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ur4k9pogkyk37k9gkxmb6l3od4jg9iib0o.png)
Remember that
. Also take one from each side of the equation:
![2x+1-1=120-1](https://img.qammunity.org/2020/formulas/mathematics/middle-school/beagyx10w1skkwwgkm3o5hmz5q7cyhpihd.png)
![2x=119](https://img.qammunity.org/2020/formulas/mathematics/middle-school/spyns8muvfapimcei7qhvcy85r1zr1f61j.png)
Dividing by 2 on both sides:
![x=(119)/(2)=59.5](https://img.qammunity.org/2020/formulas/mathematics/middle-school/oj1wsw8t53j82tkd3iwr159z728dx4izbi.png)
Which is Anna Ellie's age (59.5) and Elsa's is 59.5+1 =60.5.