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Systems of three linear equations practice
Systems of three linear equations · 1–12
Solve the system. Write the answer as (x, y, z).
1.x + 2y − z = −52x − y + z = 5x + y + z = −9
2.x + y − z = −3x − 2y + z = 03x + y + z = −7
3.2x + y + z = 6x − y + z = 3x + 2y − z = 0
4.x + y + z = −3x − y + 2z = 42x + y − z = −6
5.x + y − z = 1x − 2y + z = −33x + y + z = 3
6.2x + y + z = 18x − y + z = 2x + 2y − z = 12
7.x + y − z = 1x − 2y + z = −23x + y + z = 9
8.2x + y + z = 0x − y + z = 1x + 2y − z = −3
9.x + 2y − z = 22x − y + z = −16x + y + z = −2
10.x + y + z = −1x − y + 2z = 122x + y − z = −6
11.x + 2y − z = 42x − y + z = −6x + y + z = −3
12.x + 2y − z = −142x − y + z = −3x + y + z = −2
Answer key — Systems of three linear equations practice
Systems of three linear equations
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