9k = 130 + 140
9k = 270
k = 270 / 9
k = 30
(30 + b) / 200 = 120 - 164
(30 + b) / 200 = -44
30 + b = -44 * 200
30 + b = -8800
b = -8800 - 30
b = -8830
(720 - c) / 9 = 164
720 - c = 164 * 9
720 - c = 1476
c = 720 - 1476
c = -756
Ответ: k = 30, b = -8830, c = -756.
9k = 130 + 140
9k = 270
k = 270 / 9
k = 30
(30 + b) / 200 = 120 - 164
(30 + b) / 200 = -44
30 + b = -44 * 200
30 + b = -8800
b = -8800 - 30
b = -8830
(720 - c) / 9 = 164
720 - c = 164 * 9
720 - c = 1476
c = 720 - 1476
c = -756
Ответ: k = 30, b = -8830, c = -756.