X+y+z=7x-y+z=54x-2y+z=10​

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X+y+z=7x-y+z=54x-2y+z=10​

Jawaban:

x+y+z=7

x-y+z=5

_______-

2y=2

y=1

lalu masukkan y=1

  • x-(1)+z=5
  • x+z=5+1
  • x+z=6
  • 4x-2(1)+z=10
  • 4x+z=10+2
  • 4x+z=12

lalu

x+z =6

4x+z=12

_______-

-3x= -6

x= 2

jadi x=2 y=1

lalu masukkan ke salah satu

  • x+y+z=7
  • 2+1+z=7
  • 3+z=7
  • z=7-3
  • z=4

jadi x=2 y=1 z=4