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Determinati 10x+27y+9z stiind ca 2x+3y=17 si 4y+3z=74


Răspuns :


10x+27y+9z=5x17+74x3=307

2x+3y=17

4y+3z=74

Sper ca te-am ajutat!!!

10x+27y+9z=10x+15y+12y+9z=5(2x+3y)+3(4y+3z)=5*17+3*74=85+222=307