Question

tìm x biết 

11/13 - ( 5/42 - x ) = - ( 15 - 11/13 )

Answer 1

11/12-(5/42-x)=-(15-11/13)

=>11/13-(5/42-x)=184/13

=>5/42-x=11/13- (-184/13)

=>5/42-x=15

=>x=5/42-15

=>x=-625/42

Answer 2

5/42-x=11/13- [-(15-11/13)]=11/13+15-11/13

5/42-x=(11/13-11/13)+15=15

x=5/42-15=5/42-630/42

x=-625/42

Vậy x=-625/42