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Sample edHelper.com - LinearEquations Worksheet

 Name _____________________________ Date ___________________
Systems of Equations in Three Variables
Solve each system of equations.
 9  - 4 3 7 6  - 5 8  - 10  - 11 12 1  - 13 2  -

down 1.

6x + 6y + 4z = -64
-2y = 4
-3x - 4y + z = 31
 y  =  ?

down 2.

-6x - y + 3z = 192
-z = 9
3x + 2y + 4z = -87
 z  =  ?

down 3.

-7x + 5y + z = -64
-3x - 2y - 6z = 2
-6x = -36
 x  =  ?

down 4.

-5x - 3y + 2z = 3
7x - y - 12z = 679
x - 2y - 2z = 203
 x  =  ?

down 5.

12x - y - z = -120
x + 3y - 5z = -29
-9x = 81
 z  =  ?

down 6.

8x - 6y - 9z = -307
-x - 4y + 5z = -116
-x - 11y + 4z = -216
 x  =  ?

down 7.

-x - 2y + 5z = 181
-5x - 5z = 95
-4x + 2y - 5z = 29
 z  =  ?

down 8.

-2x - y - z = -62
-x + y + 7z = 188
-5y = 170
 y  =  ?

down 9.

2x - y + 4z = -242
-x - 5y - 4z = -34
3z = -81
 z  =  ?

down 10.

8x = -328
-2x - 4y - 4z = 42
-x + 2y - z = 136
 x  =  ?

across 1.

-12x + 10y + z = -86
-4x + y - 4z = 16
8y = -64
 y  =  ?

across 2.

y - 2z = -91
-8x + 5y - 6z = -67
-9x - y - 11z = -15
 y  =  ?

across 4.

-2x - 3y - z = -1
-5x - 5y - 5z = 105
-3x - 5y - 9z = 297
 x  =  ?

across 6.

12x - 10y - 3z = -707
4y - 5z = -25
-7x + y + 2z = 321
 x  =  ?

across 8.

-8x - y + 3z = -220
2x - 6y - 3z = 354
-6y = 192
 z  =  ?

across 9.

-8y = 40
-11x + y + 9z = 108
-x - y - 5z = -8
 y  =  ?

across 10.

-4y = 104
x - 12y - 11z = 406
4x - y + 10z = -300
 z  =  ?

across 11.

-2x + 5y - 2z = -12
-6x + 12y + z = -164
-11x + 2z = -523
 x  =  ?

across 12.

11x - 4y + 10z = -134
-6x + 6y - 5z = 170
-x - y + 2z = -90
 x  =  ?

across 13.

-z = 0
8x + 11y - z = 35
-6x - 2y - z = -20