Question

решите уравнение 15 7/8-(х+21 1/8)=4 3/4

Answer 1

$15 \frac{7}{8} - (x + 21 \frac{1}{8} ) = 4 \frac{3}{4}$
$\frac{105}{8} - (x + \frac{21}{8} ) = 3$
$\frac{105}{8} - x - \frac{21}{8} = 3$
$\frac{21}{2} - x = 3$
$- x = 3 - \frac{21}{2}$
$- x = - \frac{15}{2}$
$x = \frac{15}{2}$




вроде так