Question

Sase mingi de fotbal si 6 masinute costa 3000 de lei.Patru mingi de fotbal si 3 masinute costa 1700 de lei.Cat costa o minge?
REPEDE!!!VA ROOOOOOOOG!!!!!!

Answer 1

NOTEZ MINGILE CU M SI MASINUTELE CU X

6*M+6*X=3000

4*M+3*X=1700  /*2

8*M+6*X=3400

6*M+6*X=3000

----------------------(-)

=>2*M=400

M=200

X=300

Answer 2

6m+6M=3000 |:6=>m+M=500=>m=500-M

4m+3M=1700<=>2000-4M+3M=1700<=>M=300 de lei costa o masinuta

m=500-300=200 de lei costa o minge