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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 − y + z = 122x + y − z = 0x + y + 2z = 2
2.x + y − z = 2x − 2y + z = 83x + y + z = −6
3.x − y + z = 112x + y − z = 1x + y + 2z = 15
4.x + 2y − z = 202x − y + z = 4x + y + z = 10
5.2x + y + z = −2x − y + z = 5x + 2y − z = −10
6.x + y + z = −6x − y + 2z = −152x + y − z = −6
7.x + y + z = −1x − y + 2z = 62x + y − z = 5
8.x − y + z = −32x + y − z = 9x + y + 2z = 4
9.x + y − z = −3x − 2y + z = 33x + y + z = 11
10.x + y − z = 7x − 2y + z = −203x + y + z = −13
11.x − y + z = 62x + y − z = −9x + y + 2z = 7
12.x + y − z = −8x − 2y + z = 103x + y + z = −4
Answer key — Systems of three linear equations practice
Systems of three linear equations
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