Răspuns :
5·[326 - a·( 54:9 )] + 845 = 1995
5·(326 - a·6) = 1995 - 845
1630 - 30 a = 1150
1630 - 1150 = 30 a
30 a = 480
a = 480 : 30
a = 16
5·(326 - a·6) = 1995 - 845
1630 - 30 a = 1150
1630 - 1150 = 30 a
30 a = 480
a = 480 : 30
a = 16
5×[326-a×(54:9)]+845=1995
5×(326-a×6)=1995-845
1630-30×a=1150
1630-1150=30×a
30×a=480
a=480:30
a=16
5×(326-a×6)=1995-845
1630-30×a=1150
1630-1150=30×a
30×a=480
a=480:30
a=16