b=510
c=298
b+c=808
b-c=212
c=167
b+c=690
b=690-167=523
b-c=356
b=716
b-c=578
c=716-578
c=138
b+c=854
b=635
b+c=850
c=850-635
c=215
b-c=420
tabelul nr 2
217+389=606
85+389=474
196+389=585
374+389=763
298+389=687
641-217=424( diferenta adica +424)
85+424=509
196+424=620
374+424=798
298+424=722
217+538=755
85+538=623
196+538=734
374+538=912
298+538=836
263-85=178(+178)
217+178=395
196+178=374
374+178=552
298+178=474
408-196=212(+212)
217+212=429
85+212=297
374+212=586
298+212=510
