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  • Utilizator Brainly
2014-11-15T09:50:50+02:00
2x+3y=17 /*5........... 10x+15y= 85.......... 4y+3z=74 /*3... ... 12y+9z=222 →→→ 10x+15y+12y+9z=85+222 → 10x+27y+9z=307
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2014-11-15T09:50:55+02:00
2x+3y=17 I x5
4y+3z=74 I x3
10x+15y+12y+9z=85+222
10x+27y+9z=307

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