Question

what should be added to (1/4+1/5+1/6) to get 8.​

Answer 1

$\frac{1}{4} + \frac{1}{5 } + \frac{1}{6} + \frac{x}{1} = 8 \\ \\ = > \frac{15 + 12 + 10 + 60x}{60} = 8\\ \\ = > x = \frac{8 \times 60}{37} \\ = > \frac{480}{37}$