Question

X-9/13=36/39 помогите пожалуйста.

Answer 1

x - 9/13 = 36/39

x = 12/13 + 9/13

X = 21/13 = 1  8/13

Answer 2

$x - \frac{9}{13} = \frac{36}{39} \\ x = \frac{12}{13} + \frac{9}{13} \\ x = \frac{12 + 9}{13} \\ x = 1 \frac{8}{13}$