Найдите значение выражения 8 7\9+(7 5\9-4 4\9) и 11 2\9- (3 17\19+6 14\19)

Question

Найдите значение выражения 8 7\9+(7 5\9-4 4\9) и 11 2\9- (3 17\19+6 14\19)

Answer 1

8 7/9 + (7 5/9 - 4 4/9) = 8 7/9 + 3 4/9 = 11 11/9 = 12 2/9

11 2/19 - (3 17/19 + 6 14/19) = 11 2/19 - 9 31/19 = 11 2/19 - 10 12/19 = 1 2/19 - 12/19 = 19/19 + 2/19 - 12/19 = (19+2-12)/19 = 9/19

Answer 2

7/9+(7ц5/9-4ц4/9)=7/9+3ц1/9=3ц8/9; 11ц2/9-(3ц17/19+6ц14/19)=11ц2/9-9ц31/19=11ц18/171-10ц108/171=10ц189/171-10ц108/171=81/171=9/19