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
$\frac{19}{10} - ( \frac{23}{4} -( x+1 )) = \frac{315}{100}$
$\frac{23}{4} - x - 1 = \frac{19}{10} - \frac{315}{100}$
$\frac{23}{4} - x = \frac{190-315+100}{100}$
$x= \frac{23}{4} + \frac{25}{100}$
$x= \frac{23}{4} + \frac{1}{4} = \frac{24}{24} = 1$