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Earn +20 ptsQ: What is z plus 4 equals 2?
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8z plus 6 equals 7z plus 4?
z = -2
2x-y plus z equals 4?
6
X squared plus y squared plus z if x equals 7 y equals 6 and z equals 4?
89
X plus y-z equals 2 -x-5y plus 2z equals 21 5x plus 4y-4z equals 12?
I used the matrix method to find the answer: x=4, y=-7, z=-5.
Solve the system using any algebraic method a. -5x-y equals -3 ---- x-4y equals 9 b. x plus y-z equals 7 ---- 2x-3y plus z equals 2 ---- 4x plus 2y-2z equals 20?
y=5x+2 if y equals -4
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