Răspunsuri

2014-08-18T16:47:01+03:00
Xy-7x =11

x(y-7) =11   x;y   -nr naturale

1) x=1  => y-7= 11  <=> y=11+7=18

2)x=11  =>y-7=1   <=> y= 1+7=8

S(x;y)= {(1;18);(11;8)}
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