Kak bantu kelas 10 matematika wajib​

Jawab:

8z = -8

z = -8/8

z = -1

=========

3y -2z = -4

3y -2(-1) = -4

3y + 2 = -4

3y = -6

y = -2

=========

2x + y + z = -9

2x -2 -1 = -9

2x -3 = -9

2x = -6

x = -3

maka, x – (y+z) = -3 -(-2-1) = -3 + 3 = 0

semoga membantu, jadikan jawaban terbaik yaa^^