Răspunsuri

2014-04-28T21:57:02+03:00
B-3a =0 a+3b=2( le adunam) => 4b-2a=2 2B-a=2 => a=2b
Cel mai inteligent răspuns!
2014-04-28T21:58:28+03:00
2,(5)=25-2/9=23/9
0,(3)=3/9 simplificam=1/3
a+3b=23/9          inmultim cu 3
-3a+b=1/3

3a+9b=23/3
-3a+b=1/3    se reduce a
10b=24/3
b=24/30 simplificam
b=4/5
a=23/9-3b
a=23/9-12/5
a=7/45
1 5 1