[tex] \frac{28}{5} - \frac{n \times 24 + 1}{5} = 4.2 \\ \frac{28}{5} - \frac{24n + 1}{5} = \frac{21}{5} ( \times 5) \\ 28 - (24n + 1 )= 21 \\ 28 - 24n - 1 = 21 \\ 27 - 24n = 21 \\ - 24n = 21 - 27 \\ - 24n = - 6 \\ n = - 6 \div (- 24) \\ n = \frac{1}{4} [/tex]
Forma zecimala 0,25
Raspuns corect b)
