12-(x-1)=2,4
REPEDEEEEEEEEEE !!!!!!!!!!!!!!!!!!!!!!!!


Răspuns :

12-(x-1)=2.4 <=> 12-x+1=2.4 <=> 12-x=2.4-1 <=> 12-x=1.4 <=>x = 12-1.4 => x= 10.6