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Dau coroana
Pls pls pls


Dau Coroana Pls Pls Pls class=

Răspuns :

3a+3b=17+19
3a+3b=36:3
a+b= 12
b=17-12=5
b=5
a=19-12=7
a=7
Atat, Cu placere :)