Question

Solutia naturala a ecuatiei x supra 2 - 1 = 3 este egala cu..

Answer 1

$\frac{x}{2} - 1 = 3 \\ \\ \frac{x}{2} = 3 + 1 = 4 \\ \\ x = 4 \times 2 = 8$

Answer 2

$\frac{x}{2}-1=3\\ \\ \frac{x}{2}=3+1\\ \\ \frac{x}{2}=4\\ \\ x=4\cdot2\\ \\ x=8$∈N