Hello from MrBillDoesMath!
Answer:
88
Discussion:
Order of operations has multiplication\division performed before addition\subtraction. So our equation is interpreted as
(y/8) + 19 = 30 => subtract 19 from both sides
(y/8) = 30 - 19 = 11 => multiply both sides by 8
(y/8) 8 = 8 * 11 =>
y = 88
Thank you,
MrB