Răspuns :
a.405362-19408=385954
385954+19405=405362
405362-171992=233370
233370+171992=405362
b.39118-19408=19710
19710+19408=39118
171992-39118=132874
132874+39118=171992
385954+19405=405362
405362-171992=233370
233370+171992=405362
b.39118-19408=19710
19710+19408=39118
171992-39118=132874
132874+39118=171992
a.405362-19408=385954
385954+19405=405362
405362-171992=233370
233370+171992=405362
b.39118-19408=19710
19710+19408=39118
171992-39118=132874
132874+39118=171992
385954+19405=405362
405362-171992=233370
233370+171992=405362
b.39118-19408=19710
19710+19408=39118
171992-39118=132874
132874+39118=171992