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3 fuste si 2 bluze Costa in total 187 lei.Iar 2 fuste si 3 bluze Costa in total 168 lei.Aflati cat costa 5 fuste si 6 bluze in total.

Răspuns :

x= fusta
y=bluza

3x+2y=187
2x+3y=168

9x+6y=561
4x+6y=336

9x+6y-4x-6y=561-336
5x=225
x=45
y=(187-3x)/2=(187-135)/2=52/2=26

5x+6y=5*45+6*26=225+156=381 costa 5 fuste si 6 bluze