Question

4×(14-y)-8=20
1000-4×(2c-5)=300

Answer 1

1) 4×(14-y)-8=20
56-4у-8=20
-у= - 28
у= 28

2) 1000-4×(2c-5)=300
1000-8х+20= 300
8х= - 720
х= - 90

Кажется так