Question

решите уравнения. (х-5ц3/21)+2ц6/7=9ц1/14; 21ц1/4-(х+2ц5/12)=6ц7/8

Answer 1

х-5 3/21+2 6/7=9 1/14
х=9 3/42+5 6/42-2 36/42
х=14 9/42-2 36/42
х=13 51/42-2 36/42
х=11 15/42
х=11 5/14

21 1/4-х-2 5/12=6 7/8
21 6/24-2 10/24-6 21/24=х
х=21 6/24-8 31/24
х=20 30/24-9 7/24
х=11 23/24

Answer 2

Спасибо большое