Question

(х-3 13/21)+2 10/21=7 2/21

1 5/7*х-5/9=2 4/9

Answer 1

Ответ:

Пошаговое объяснение:

(х-3 13/21)+2 10/21=7 2/21

Х=7 2/21+3 13/21-2 10/21

Х=8 5/21

1 5/7*х-5/9=2 4/9

1 5/7х=2 4/9+5/9

1 5/7х=3

Х=3:1 5/7=3*7/12

Х=7/4=1 3/4

Answer 2

1.

$(x - frac{13}{7} ) + frac{20}{21} = frac{2}{3} \ x - frac{13}{7} + frac{20}{21} = frac{2}{3} \ x = frac{2}{3} + frac{19}{21} \ x = frac{11}{7} = 1 frac{4}{7}$

2.

$frac{25}{65} x = frac{8}{9} \ x = frac{56}{25} = 2 frac{6}{25}$