Subtitusi dari .4x-3y+2z=11. 3x+2y=7 Y=-1
Matematika
mitha260
Pertanyaan
Subtitusi dari
.4x-3y+2z=11.
3x+2y=7
Y=-1
.4x-3y+2z=11.
3x+2y=7
Y=-1
2 Jawaban
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1. Jawaban BSunShine
Materi : SPLTV
4x - 3y + 2z = 11
3x + 2y = 7
y = -1
3x + 2y = 7
3x + 2(-1) = 7
3x = 7 + 2
3x = 9
x = 3
4x - 3y + 2z = 11
4(3) - 3(-1) + 2z = 11
12 + 3 + 2z = 11
15 + 2z = 11
2z = 11 - 15
2z = -4
z = -2
Hp = { 3 , -1 , -2 } -
2. Jawaban QueenD
3x + 2y = 7
3x+2(-1)=7
3x = 7+2
3x = 9
x = 9/3 = 3
4x-3y+2z=11
4(3)-3(-1)+2z = 11
2z = 11-12-3
2z = -4
z = -4/2 = -2