Question

Aflati un nr natural stiind ca daca îl inmultesti cu 6 obtinem acelaș nr ca atunci cand îl adunam cu50

Answer 1

$x \times 6 = x + 50 \\ 6x = x + 50 \\ 5x = 50 \\ x = 10$

Answer 2

Notez numarul cu ,,a "

a × 6 = a + 50

6 × a - a = 50

5 × a = 50

a = 50 : 5

a = 10 → numarul natural cautat

Verific:    10 × 6 = 10 + 50 = 60