Răspuns :
754 + ( 378 - 5xa) : 6 = 1000 - 244
754 + ( 378 - 5xa) : 6 = 756
( 378 - 5 x a) : 6 = 756 - 754
( 378 - 5xa) : 6 = 2
378 - 5 x a = 2 x 6
378 - 5xa = 12
5a = 378 - 12
5a = 366
a = 366 : 5
a = 73,2
754 + ( 378 - 5xa) : 6 = 756
( 378 - 5 x a) : 6 = 756 - 754
( 378 - 5xa) : 6 = 2
378 - 5 x a = 2 x 6
378 - 5xa = 12
5a = 378 - 12
5a = 366
a = 366 : 5
a = 73,2
1000-[754+(378-5xa):6]=244
1000-244=[754+´(378-5xa):6]
756=[754+(378-5a):6]
756-754=(378-5a):6
2x6=378-5a
12=378-5a
5a=378-12
5a=366
a=366:5
a=73,2
1000-244=[754+´(378-5xa):6]
756=[754+(378-5a):6]
756-754=(378-5a):6
2x6=378-5a
12=378-5a
5a=378-12
5a=366
a=366:5
a=73,2