Question

Реши уравнения :х +4/21 =2/3 +2/7

Answer 1

$x+ frac{4}{21} = frac{2}{3} + frac{2}{7}$
$x= frac{2}{3}+ frac{2}{7} - frac{4}{21}$
$x= frac{20}{21} - frac{4}{21}$
$x= frac{16}{21}$
Ответ:$frac{16}{21}$