Seudónimo
Seudónimo
20-02-2015
Mathematics
contestada
Hello i'll attached them Okay
Respuesta :
apologiabiology
apologiabiology
20-02-2015
so megan is four years younger than her aunt
m+4=a
or
m=a-4
the sum of their ages is at least 40
m+a
>
40
subsitute a-4 for m
a-4+a
>
40
combine like terms
2a-4
>
40
the answer is the third from the top
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