Question

Решите уравнение: (a+5):4,2=111:666

Answer 1

$frac{a+5}{4.2}= frac{111}{666}$
$4.2= frac{42}{10}=frac{21}{5}$
$a+frac{5}{ frac{21}{5} }= frac{1}{6}$
$a= -frac{43}{42}= -1frac{1}{42}$