Question

1. 9(y+10)+3(y+6)=228

2. 9(n+3)-9(n+8=6(n-11)-7(n-3)

Urgent pls!

Answer 1

$1.9(y + 10) + 3(y + 6) = 228 = > 9y + 90 + 3y + 18 = 228 = > 12y + 108 = 228 = > 12y = 228 - 108 = > 12y = 120 = > y = 10$

$2.9(n + 3) - 9(n + 8) = 6(n - 11) - 7(n - 3) = > 9n + 27 - 9n - 72 = 6n - 66 - 7n + 21 = > - 45 = - n - 45 = > 0 = - n = > - n = 0 = > n = 0.$