Answer:

n = 32

y = 5

Step-by-step explanation:

1. finding n

divide both sides of the equation by the coefficient of variable: n = 16/4 × 8

write as a single fraction: n = 16 × 8/4

cross out the common factor: n = 4×8

calculate the product or quotient: n = 32

answer: n = 32

2. finding y

combine like terms: 18Y = 90

divide both sides of the equation by the coefficient of variable: 90/18

cross out the common factor: y = 5

answer: y = 5