Answer:
I think if you take the two of the equations and subtract them from eachother then youll get a number being x=(blank) then just subsitute it in for the third equation and see if it works. (sorry if this doesnt help)
Step-by-step explanation:
Her oldest was 9, and the other 2 were 2
The answer is D
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The image I put is the answer.
12+20e
1. Distribute 5 into 1 and 4e in which you get 5+20e
2. We now can collect like terms: 7+5+20e=12+20e
Since we are only simplifying, 12+20e is our final answer.
