tolong bantu saya jawab dong sekalian sma caranya makasih

2y - 3z = 24
3z - 7x = 2
_________ +
2y - 7x = 26 _______ -7x + 2y = 26
x - 3y = - 1 ___ x7 - > 7x - 21y = - 7
_________________________________ +
- 19 y = 19
y = - 1

x - 3(-1) = - 1
x = - 1 - 3
x = - 4

jawabannya yg b. - 4

maaf kalau salah