Question

Given that R= 4x + 4y

Find x when y = 9 and R = 6
Give your answer as an improper fraction in its simplest form.

Answer 1

you first substitute your given digits into the equation then you collect like terms and you get your answer

Answer 2

x = -15/2

6 = 4x + 4(9)

4x = -30

x = -30/4 = -15/2