Question

1) Rezolvati ecuatiile in multimea numerelor naturale:
a) 2(2x+1)+3|2x+1|=4(x+3)+5
b) 3(2x+1)+4$\sqrt{(2x-1) ^{2} }$ =2(3x+4)+7
2) Rezolvati ecuatia $(x-5)^{2}$ - (x+3)(x+1)= $(x+1)^{2}$ - ($x^{2}$ +11) .
3) Rezolvati ecuatia: $\frac{x+5}{4} + \frac{x+6}{5} + \frac{x+7}{6} + \frac{x+8}{7} + \frac{x+9}{8} = 5$

Answer 1

..................................