Question

2/3 + ( 7/9 - а ) = 7/8

Answer 1

$\frac{2}{3} +( \frac{7}{9} - a) = \frac{7}{8}$

$\frac{2}{3} + \frac{7}{9} - a = \frac{7}{8}$

$1 \frac{4}{9} - a = \frac{7}{8}$

$a = \frac{41}{72}$

Answer 2

Ответ:

Пошаговое объяснение:

2/3 + (7/9 - а) = 7/8

7/9 - а = 7/8 - 2/3

7/9 - а = 21/24 - 16/24

7/9 - а = 5/24

а = 7/9 - 5/24

а = 56/72 - 15/72

а = 41/72