Question

25 ! решите уравнения с решением и правильно 1) 8+x=0,1 2) x+2/3=0,1 3) 5/16-x=5/2 4) -7/9-x=-13/18 5) x-6/7=-5/14 6) x-1целую5/7=-4целых13/14

Answer 1

1)8+х=0.1
х=0.1-8
х=-7.9
$x + \frac{2}{3} = 0.1 \\ x = \frac{1}{10} - \frac{2}{3} \\ x = \frac{3 - 20}{30} \\ x = - \frac{17}{30}$
$\frac{5}{16} - x = \frac{5}{2} \\ x = \frac{5}{16} - \frac{5}{2} \\ x = \frac{5 - 40}{16} \\ x = \frac{ - 35}{16}$
$- \frac{7}{9} - x = - \frac{13}{18} \\ x = - \frac{7}{9} + \frac{13}{18} \\ x = \frac{ - 14 + 13}{18} \\ x = - \frac{1}{18}$
$x - \frac{6}{7} = - \frac{5}{14} \\ x = - \frac{5}{14} + \frac{6}{7} \\ x = \frac{ - 5 + 12}{14} \\ x = \frac{7}{14} \\ x = 0.5$

$x - 1 \frac{5}{7} = - 4 \frac{13}{14} \\ x = - \frac{69}{14} + \frac{12}{7} \\ x = \frac{ - 69 + 24}{14} \\ x = \frac{ - 45}{14}$