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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 = 7x − y + 2z = −72x + y − z = 21
2.x + y + z = 3x − y + 2z = 142x + y − z = −6
3.x + y − z = 2x − 2y + z = −133x + y + z = −20
4.x + y − z = 5x − 2y + z = −13x + y + z = 11
5.x + y + z = −3x − y + 2z = 92x + y − z = −14
6.x + 2y − z = 12x − y + z = −4x + y + z = −3
7.2x + y + z = −13x − y + z = 0x + 2y − z = −11
8.x + 2y − z = −22x − y + z = 19x + y + z = 11
9.x + 2y − z = 112x − y + z = 3x + y + z = 10
10.2x + y + z = 2x − y + z = 10x + 2y − z = −8
11.2x + y + z = 4x − y + z = 2x + 2y − z = 5
12.x + y − z = −7x − 2y + z = 53x + y + z = −13
Answer key — Systems of three linear equations practice
Systems of three linear equations
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