29/43 - (m + 13/43) = 5/43
m + 13/43 = 29/43 - 5/43
m + 13/43 = 24/43
m = 24/43 - 13/43
m = 11/43
ответ: 11/43
29/43 - (m + 13/43) = 5/43
m + 13/43 = 29/43 - 5/43
m + 13/43 = 24/43
m = 24/43 - 13/43
m = 11/43
ответ: 11/43