Question 1142882
5x + 5y - 4z = 13
5x + 3y + z =  -3
3x - 2y - z =  -10
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Add equations 2 & 3
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Multiply eqn 2 by 4, then add eqn 1.
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z is eliminated.
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Do not enter this.
x=___
y=___
z=___
We have no use for it.