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Rezolvă: 1,(3)x-1,5=0,8(3)x-1

Răspuns :

(13-1)/9x-1,5=(83-8)/90x-1
12/9x-1,5=75/90x-1
4/3x-1,5=5/6x-1
8/6x-5/6x=-1+1,5
3/6x=0,5
x=1/2*6/3
x=1