Выполните действие (7ц1/5+43/5+1ц1/5)+(9ц8/13-2ц9/13 -3ц 7/13)
помогите
7 1/5 + 43/5 + 1 7/5 = 36/5 + 43/5 + 12/5 = 91/5 = 18 1/5 9 8/13 - 2 9/13 - 3 7/13 = 125/13 - 35/13 - 46/13 = 44/13 = 3 5/13 18 1/5 + 3 5/13 = 91/5 + 44/13 = 1183/65 + 220/65 = 1403/65 = 21 38/65 ответ 21 38/65