Posted by **marissa.1274** on Thursday, January 13, 2011 at 7:42pm.

if x, y, and z are positive numbers, with xy = 24, xz = 48, and yz = 72, what is x + y + x? please explain how you got tha answer too. thank you.

- Algebra -
**helper**, Thursday, January 13, 2011 at 8:50pm
xz = 48

yz = 72

xy = 24

x = 4, y = 6, z = 12

x + y + z = 4 + 6 + 12 = 22

I did this manually, by trial an error

there must be an easier way ?

I am not a tutor

maybe a tutor will answer with an easier way

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