3. Решите уравнения: x - 5/11 = 33, 6.28x - 2.8x = 36.54.

Ответ:

a) x = 33 + 5/11 = 368/11. b) 6.28x - 2.8x = 36.54, 3.48x = 36.54, x = 36.54 / 3.48 = 10.5.