Question 104155
-3x-3y+2z=-7
z=1
-2x-3y+z=-6
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Substitute z for z and rewrite the equations:
-3x-3y=-9
-2x-3y=-7
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Subtract the 1st equation by the 2nd to get:
x = 2
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Substitute into -2x-3y=-7 to solve for y:
-2*2-3y = -7
-3y = -3
y = 1
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Solution:
x = 2; y = 1, z = 1
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Cheers,
Stan H.