Question

Пж помогите 507 тендеуды шешыныз у+2/7=1/3
x-1/6=7/9
у+2/5=1/2

Answer 1

1)y=1/3-2/7

y=1/21

2)x=7/9+1/6

x=17/18

3)y=1/2-2/5

y=1/10