(29/42-а)-13/42=11/42

Question

(29/42-а)-13/42=11/42

Answer 1

29/42-а=11/42+13/42
29/42-а=14/42
а=29/42-14/42
а=15/42
а=3/16

Comments

спасибо)

Answer 2

29/42-а=11/42+23/42
29/42-а=34/43
а=34/42-29/42
а=5/42
(29/42-5/42)-13/42=11/42
24/42-5/42=11/42
11/42=11/42