Răspuns :

Răspuns: a × b = 34

Explicație pas cu pas:

[ 3 + ( a × b + 31 × 8 - 603 : 3 ) : 9 ] × 2 + 1993 = 2017

[ 3 + ( a × b + 248 - 201 ) : 9 ] × 2 = 2017 - 1993

[ 3 + ( a × b + 248 - 201 ) : 9 ] × 2 = 24

3 + ( a × b + 248 - 201 ) : 9 = 24 : 2

3 + ( a × b + 248 - 201 ) : 9 = 12

( a × b + 248 - 201 ) : 9 = 12 - 3

( a × b + 248 - 201 ) : 9 = 9

a × b + 248 - 201 = 9 × 9

a × b + 248 - 201 = 81

a × b = 81 + 201 - 248

a × b = 282 - 284

a × b = 34

34 = 2 × 17 = 17 × 2 = 34 × 1 = 1 × 34

( a, b ) = ( 2, 17  );  ( 17,  2 ); ( 34,  1); ( 1, 34)