va rog dau coroana rezolvați a, b

Răspuns:
3*75+ 3775+
*64* 5649
----------- -------------
94*4 9424
______________________
39**+ 3971+
**83 3383
---------- --------------
7354 7354
__________________
*5*2+ 7522+
3*1* 3919
--------- ---------------
**441 11441