2x+3y=8 x+4z=-6 2y-z=9
Matematika
nelanelabatara09
Pertanyaan
2x+3y=8
x+4z=-6
2y-z=9
x+4z=-6
2y-z=9
1 Jawaban
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1. Jawaban alex422
2x+3y=8
x+4z= -6
'''''''''''''''''''' -
3y-8z=20 ....(1)
y-z=9
'''''''''''''''''''''-
-5z= -7 -----》 z=7/5
x+4(7/5)= -6 -----》x= -6-28/5 = -58/5
y=9+7/5=52/5