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|2x+1|=3 |3x-1|=8 |2x-1|=7 cum se rezolva astea 3 ex ? ( Rezolvati in R ecuatiile )

Răspuns :

2x+1= +3 sau -3..si asa faci la toate si scoti x-ul 2x+1= 3 2x=2 x=1 2x+1=-3 2×=-4 ×=-2 3×-1=8 sau -8 3×-1=8 3×=9 ×=3 3×-1=-8 3×=-7 ×=-7/3 2×-1=7 sau -7 2×-1 =7 2×=8 ×=4 2×-1=-7 2×=-6 ×=-3