aflati x ∈ℕ stiind ca : a) 6 supra 2 x-1;b)x+2 supra x +10=1 supra 3

Răspuns :


b) x+2/x+10=1/3
3(x+2)=x+10
3x+6=x+10
3x+6-x-10=0
2x-4=0
2x=4
x=2.