Question

81 цел. 5/6 - x = 79цел. 3/4

Answer 1

81 цел. 5/6 - x = 79цел. 3/4

x = 81 5/6 - 79 3/4

x = 81 10/12 - 79 9/12

x = 2цел. 1/12

Answer 2

$\frac{491}{6} - x = \frac{319}{4} \\ \\ - x = \frac{319}{4} - \frac{491}{6} \\ \\ - x = - \frac{25}{12} \\ \\ x = 2 \frac{1}{12}$