Respuesta :

Sydnet

Answer:

sonja has 6 books

Step-by-step explanation:

let m = amount of books sonja has

2m+m=18

combine like terms

3m=18

divide

m=6
sonja has 6 books because alfronzo has twice as much which means he has 12 books and that’s because we multipled sonja’s amount of books with 2 and added 12+6 = 18 (the amount of all their books together)

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