Notez cu a ardei si cu b baanele
[tex]\left \{ {{2,5a+4b=32} \atop {5a+2b=31}} \right.[/tex] ( inmultesti a doua ecuatie cu -2)
[tex]\left \{ {{2,5a+4b=32} \atop {-10a-4b=-62}} \right.[/tex] (tragi bara si aduni pe verticala)
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-7,5a=-30
a=4(un kg de ardei)
5*4+4b+32
20+4b=32
2b=12
b=6(un kg banane)
COROANA??
