10 (5-n) - 1=29 how to check

50 - 10n - 1 = 29

- 10n + 50 - 1 = 29

- 10n + 49 = 29

- 10n = 29 - 49

-10 n = - 20

n = - 20/-10

n = 2

10 (5-n) - 1=29

Mutiply the bracket by 10

(10) (5) (10) (-n) - 1 = 29

50-10n-1 = 29

50-1-10n = 29

49-10n = 29

move + 49 to the other side

sign changes from + 49 to - 49

49-49-10n = 29-49

-10n = - 20

divide by - 10

-10n/-10 = - 20/-10

n = 2

Check answer by using the substitution method

10 (5-n) - 1 = 29

10 (5-2) - 1 = 29

Do 5-2 = 3

10*3=30

30-1 = 29

Answer : n = 2