Question

$\frac{18}{30} - x = \frac{4}{30} + \frac{6}{30} \\ \\( \frac{13}{67} + \frac{6}{67}) - x = \frac{9}{67} \\ \frac{10}{15} + ( \frac{5}{15} - x) = \frac{14}{15}$


​помогите пожалуйста

Answer 1

1) 42/60 + у = 57/60
у = 57/60 - 42/60
у = 15/60
у = 1/4

2) х + 26/70 = 64/70 - 5/70
х + 26/70 = 59/70
х = 59/70 - 26/70
х = 33/70

3) х + 27/46 = 37/46
х = 37/46 - 27/46
х = 10/46
х = 5/23

4) 18/30 - х = 10/30
х = 18/30 - 10/30
х = 8/30
х = 4/15

5) 19/67 - х = 9/67
х = 19/67 - 9/67
х = 10/67

6) 5/15 - х = 14/15 - 10/15
5/15 - х = 4/15
х = 5/15 - 4/15
х = 1/15