Răspunsuri

2014-06-24T23:17:39+03:00
A+b=15/9
a-b=1/3
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2a   =5/3+1/3
2a=6/3
a=1
b=a+1/3=1+1/3=4/3=1.(3)
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2014-06-24T23:18:09+03:00
1,(6)= 1 intreg  6/9=  1 intreg 2/3=  5/3
0,(3)=3/9=1/3

a+b=5/3
a-b=1/3           aducem la acelasi numitor

3a+3b=5
3a-3b=1       adunam cele 2 ecuatii

6a /=6
a=1

3+3b=5
3b=5-3
3b=2
b=2/3
2 3 2