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a fost răspuns

Stiind ca x+2y+13=24,determinati 18 +2y +x
Stiind ca 3x+6y+19=43,determinati 6y+38+3x
Stiind ca 2x+2y+38=62,deteeminat 4y+27+4x

Răspuns :

Flavistin
x+2y+13=24
x+2y=24-13
x+2y=11
18+2y+x=18+11=29
3x+6y+19=43
3x+6y=43-19
3x+6y=24
6y+38+3x=24+38=62
2x+2y+38=62
2x+2y=62-38
2x+2y=24(inmultim cu 2)
4x+4y=48
4y+4x+27=48+27=75

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