Контрольные задания
Вопрос:Фото задания: Б. Решите уравнения: 1) −2x + 6 = −5; 2) 5x − 1 = −11; 3) −8 − 3x = 4; 4) −4 + 9x = −7; 5) −(3/7)x + 4 = 5 4/7; 6) −(3/5)x…Фото задания

Ответ:

  1. −2x + 6 = −5; −2x = −11; x = 11/2.
  2. 5x − 1 = −11; 5x = −10; x = −2.
  3. −8 − 3x = 4; −3x = 12; x = −4.
  4. −4 + 9x = −7; 9x = −3; x = −1/3.
  5. −(3/7)x + 4 = 39/7; −(3/7)x = 11/7; x = −11/3.
  6. −(3/5)x − 2 = 19/10; −(3/5)x = 39/10; x = −13/2.
  7. 5 − (8/9)x = 325/81; −(8/9)x = −80/81; x = 10/9.
  8. −3 + (20/9)x = −19/3; (20/9)x = −10/3; x = −3/2.