Решите уравнения: 3/5+x=4/5 11/25-k=7/25 y-2/7=6/7 d+2/9=1/9+7/9

Question

Решите уравнения:
3/5+x=4/5 11/25-k=7/25
y-2/7=6/7 d+2/9=1/9+7/9

Answer 1

3/5+x=4/5
 х=4/5-3/5
х=1/5
11/25-k=7/25
11/25-7/25=к
4/25=к
y-2/7=6/7
у=6/7+2/7
у=8/7=1  1/7

 d+2/9=1/9+7/9
d=1/9+7/9-2/9
d=6/9=2/3