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8+6*[4+27/( 0+u*9)] =49+10/10

Răspuns :

8+6*[4+27/( 0+u*9)] =49+10/10
6*[4+27/(u*9)] =49+1-8
6*(4+3/u) =42
4+3/u =42:6
4+3/u =7
3/u=3
u=1