Question

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Answer 1

Answer:

$n = \frac{4}{5} \: 4 + 10 \\ \\ n = \frac{4}{5 \: } \: \times 14 \\ n = \frac{4 \times70 }{5} \\ n = \frac{280}{5 } \\ n = 56$

Answer 2

Step-by-step explanation:

$x = \frac{4}{5} (x + 10) \\ \\ = > x = \frac{4x}{5} + \frac{10 \times 4}{5} \\ \\ = > x = \frac{4x}{5} + 8 \\ \\ = > x - \frac{4x}{5} = 8 \\ \\ = > \frac{5x - 4x}{5} = 8 \\ \\ = > \frac{x}{5} = 8 \\ \\ = > x = 8 \times 5 \\ \\ = > x = 40$