Răspuns :
x+4y=25
11x+3z=19
35x+8y+9z=2x+33x+8y+9z=2x+8y+33x+9z=2(x+4y)+3(11x+3z)=2*25+3*19=
=50+57=107
11x+3z=19
35x+8y+9z=2x+33x+8y+9z=2x+8y+33x+9z=2(x+4y)+3(11x+3z)=2*25+3*19=
=50+57=107