Hellow guys, Welcome to my website, and you are watching When ratio x:y:z = 2:3:4, evaluate (x+y+z)/(2x + 3y - 4z).. and this vIdeo is uploaded by Ms Shaws Math Class at 2021-09-15T16:59:39-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.