Nomor A bagaimana kerjain nya ya

[tex] \frac{a}{3} - \frac{a - 2}{5} = \frac{a(5)}{15} - \frac{a - 2(3)}{15} = \frac{5a}{15} - \frac{3a - 6}{15} = - \frac{ - 2a - 6}{15} [/tex]
jawaban yg a