Question

Given that R = 6x + 9y

Find y when X = 1 and R= 39
Give your answer as an improper fraction in its simplest form.
y=

Answer 1

11/3

Explanation:

x=1, R=39, y=?

R=6x + 9y

(substitute the parameters into the equation)

39=6(1) + 9y

39= 6 + 9y

(collect like terms)

39 - 6 =9y

33=9y

(divide both sides by 9)

33/9=9y/9

11/3=y

therefore, y= 11/3