4x+4-2x-2y=0,5
12x+5y-15=-2
2x-2y=-3,5 |×6
12x+5y=13
12x-12y=-21
Din prima scadem a doua ecuatie
-17y=-34
y=2
12x+10=13
12x=3
[tex]x=\frac{1}{4}[/tex]
Răspuns:
4(x+1)-2(x+y)=0,5
12x+5(y-3)=-2
4x-2x-2y+4=0,5
2x-2y=-3,5/-6
-12x+12y=21
0. +17y=34
y=34:17=2
2x-2y=-3,5
2x=2×2-3,5
2x=4-3,5=0,5
x=5/20=1/4
