Question

Решите уравнение
1)1,8-(2 3/5-(х-1,2))=3

2)1,9-(5 3/4-(х+1))=3,15

Answer 1

$frac{1}{8} - ( 2 frac{3}{5} - (x - frac{1}{5} )) = 3$
$frac{1}{8} - ( frac{13}{5} -x - frac{1}{5} ) = 3$
$frac{1}{8} - frac{12}{5} + x = 3$
$frac{5-96}{40} + x = 3$
$frac{-91}{40} + x = 3$
$x = 3 + frac{91}{40}$
$x= 5 frac{11}{40}$

1,9-(5 3/4-(х+1))=3,15
$frac{19}{10} - ( frac{23}{4} -( x+1 )) = frac{315}{100}$
$frac{23}{4} - x - 1 = frac{19}{10} - frac{315}{100}$
$frac{23}{4} - x = frac{190-315+100}{100}$
$x= frac{23}{4} + frac{25}{100}$
$x= frac{23}{4} + frac{1}{4} = frac{24}{24} = 1$