Răspuns:
[93-(85-9×9+7×8)]×a=338×4+1
[93-(85- 81 + 56)]×a=1352+1
[93-( 4 + 56 )]×a = 1353
(93 - 60 ) ×a = 1353
33 × a = 1353
a= 1353 ÷ 33
a= 41