Question

Find the number which is greater than one fifth of itself by 12

Answer 1

Let the number be x.
A/q
$x = \frac{x}{5} + 12 \\ x - \frac{x}{5} = 12$
$\frac{4x}{5} = 12 \\ x = \frac{12 \times 5}{4} \\ x = 15$

Answer 2

hello...

let the number be "n"

ATGC...

n/5 +12 = n

n + 60 /5 = n

n + 60 = 5n

60 = 5n - n

60 = 4n

n = 60/4

n = 15

:)