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peoblema 18 dau coroana

Peoblema 18 Dau Coroana class=

Răspuns :

2a+3b=333
b=a/3
2a+3*a/3=333
2a+3a/3=333
6a/3+3a/3=333
9a/3=333
3a=333
a=333:3
a=111
b=a/3=111;3=37      b=37
proba  2a+3b= 2*111+3*37=222+111=333