SVP SVP SVP URGENT!Résoudre le système de 3 equatins a 3 inconnues x-3y=8 4x+2y=-10 2x-6+4z=24.... Pergunta de ideia deLey2wice

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SVP SVP SVP URGENT!Résoudre le système de 3 equatins a 3 inconnues
x-3y=8
4x+2y=-10
2x-6+4z=24

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anylor X= 8 +3y
4( 8+3y) +2y = -10 => 32 +12y +2y =-10 => 14y = -10-32= -42

y = -42/14 => y = - 3
x= 8 +3y => x= 8 + 3 * -3 =- 1

2x-6+4z=24 => 4z = 24 + 6 - 2x = 24 + 6 - 2*( -1) = 32
4z = 32 => z = 32 /4 = 8

donc x = -1
      y = - 3
   z =   8