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screamingechoes
screamingechoes asked in Science & MathematicsMathematics · 1 decade ago

System Of Equations; Ordered Triples?

Complete the ordered triple:

1.

7x-y+z= -39

2x+2y-3z= -4

x-3y+2z = -19

X,Y,Z =

2.

4x-5y+6z= 27

x+5y+z= 11

3y-z+-1

X,Y,Z =

5 Answers

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  • climberguy12
    Lv 7
    1 decade ago
    Favorite Answer

    fortunately, i made a program to solve these...or you could just use matrices.

    1. X= /5

    Y=6

    Z=2

    2. X=2

    Y=1

    Z=4

    make it a good day

  • Anonymous
    5 years ago

    Turn X, Y, Z a single variable like n. x + y + z = 6 2x + 4y + 2z = 24 -x + 8y - 3z = 36 n + n + n = 6 2n + 4n + 2n = 24 -n + 8n - 3n = 36 3n = 6 8n = 24 4n = 36 n = 2 n = 3 n = 9

  • bete.dabaeen
    1 decade ago

    from3

    1)letx =-19+3y-2 &&thenbut it 1

    7(-19+3y-2z)-y+z=-39

    -133+21y-14z-y+z=-39

    20y-13z=94#

    but&&in2

    2(-19+3y-2z)+2y-3z=-4

    -38+6y-4z+2y-3z=-4

    8y-7z=34##

    from#

    y=(94+13z)/20 but this in##

    8[(94+13z)/20]-7z=34

    188/5+26z/5-7z=34

    -9z/5=-18/5

    z=2then y=6,x=-5

    2) make like 1

  • hi
    1 decade ago

    your a dork why would u want to do this boring math over the summer duhh!!

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  • Jon P
    Lv 4
    1 decade ago

    use elimination

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