Răspuns:
1439:a=27rest 8
1439-8=27×a
1431=27a=>a=1431:27=53
(7435+c):45=342rest12
7435+ c-12=342×45
c=342×45+12-7435
c=7967
(e-2987):56=765rest7
(e-2987)-7=765×56
e=765×56+2987+7
e=45834
449:b=20rest9
449-9=20b
440=20b=>b=440:20=22
(2985+d):38=452 rest 28
(2985+d)-28=452×38
2985+d-28=17176
d=17176-2985+28=14477
(f-3543):36=276rest9
(f-3543)-9=276×36
f-3543-9=9936
f=9936+3543+9=>f=13488