Question

ДАЮ 50 БАЛЛОВ
Реши систему:
z=9+t
z−2t+2=3
z=
;t=

Answer 1

$z = 9 + t \\ z - 2t + 2 = 3 \\ 9 + t - 2t + 2 = 3 \\ - t = 3 - 11 \\ - t = - 8 \\ t = 8 \\ z = 9 + 8 = 17$