Question

Solve the following system of equations for all three variables.

-x+ 5y + 4z = 7
x+10y + 4z = -1
x + 8y + 4z = -5
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Answer 1

Answer: 1. x=−7+5y+4z, y=7/5+x/5−4z/5, z=7/4+x/4−5y/4

2. x=−1−10y−4z y=−1/10−x/10−2z/5 z=−1/4−x/4−5y/2

3. x=−5−8y−4z y=−5/8−x/8−z/2 z=−5/4−x/4−2y

Explanation: