а) 7a - 201 + 34 = 237a - 167 = 237a = 23 + 1677a = 190a = 190 / 7a = 27.14
б) 19a - 7a = 16812a = 168a = 168 / 12a = 14
Ответ: а) a ≈ 27.14 б) a = 14
а) 7a - 201 + 34 = 23
7a - 167 = 23
7a = 23 + 167
7a = 190
a = 190 / 7
a = 27.14
б) 19a - 7a = 168
12a = 168
a = 168 / 12
a = 14
Ответ: а) a ≈ 27.14 б) a = 14