Question

найдите корень уровнений 3(n-3) + 22=28

Answer 1

3n-9+22=28
3n=28+9-22
3n=15
n=15:3
n=5

Answer 2

3(n-3)+22=28
3n-9+22=28
3n=28-22+9
3n= 15
n=15:3
n=5

ответ: 5