Alina I____a____I
Mama I_____a___I____a_____I___a_____I
Tata I_____a___I_____a____I____a____I ... 6 ... (aici ar mai veni inca 6 segmente .. ) .. |
a+3a+3a+6=90
7a+6=90
7a=90-6
7a=84
a=84:7
a=12
Alina=12
Mama = 3*12
Mama = 36
Tata = Varsa mamei + 6
Tata = 36 + 6
Tata = 42
Si atunci cred ca ar veni .. 12+36+42 = 90
Deci .. Cred ca e corect :D