Study Barn - If 12x - 4y = 12, 4y - 11z = 17, and 11z

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If 12x - 4y = 12, 4y - 11z = 17, and 11z - 4x = 11, what is the value of x?

A. -8

B. 2

C. 5

D. 8

E. 24

Adding the three equations gives
12x - 4x = 12 + 17 + 11.
So, 8x = 40 or x = 5.

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Question Details

Taken: 29 times

Added: 11/13/2008

Liked: 1 time

Taggged: Math, SAT

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