Question

779 решите уравнения 1) x+4 4/19=6 2/19 2) 25-x=8 3/14 3) 32-x=9 1) 4 5/7-(x-6 3/7) = 2 6/7

Answer 1

$x + 4 frac{4}{19} = 6 frac{2}{19 } \ x = 6 frac{2}{19} - 4 frac{4}{19} \ x = 5frac{21}{19} - 4 frac{4}{19 } \ x = 1 frac{17}{19}$

$25 - x = 8 frac{3}{14 } \ x = 25 - 8 frac{3}{14 } \ x = 24 frac{14}{14} - 8 frac{3}{14} \ x = 16 frac{11}{14}$

$32 - x = 9 \ x = 32 - 9 \ x = 23$

$4 frac{5}{7} - (x - frac{3}{7} ) = 2 frac{6}{7} \ x - frac{3}{7} = 4 frac{5}{7} - 2 frac{6}{7} \ x - frac{3}{7} = 3 frac{12}{7} - 2 frac{6}{7} \ x - frac{3}{7} =1 frac{6}{7} \ x = 1 frac{6}{7} + frac{3}{7} \ x = 1 frac{9}{7} \ x = 2 frac{2}{7}$