Question

Решите уравнение: B) - 5, 1(x - 14, 2) = 9, 9(x + 6, 5) - 6, 93 ;
г) 28, 32 - 4, 9(x - 2, 7) - 5, 83 = 8, 1(x + 1, 2)

Answer 1

Смотри решение на фото выше

Answer 2

Объяснение:

в)

$- 5.1(x - 14.2) = 9.9(x + 6.5) - 6.93 \\ - 5.1x + 72.42 = 9.9x + 64.35 - 6.93 \\ - 5.1x + 72.42 = 9.9x + 57.42 \\ - 5.1x - 9.9x = 57.42 - 72.42 \\ - 15x = 57.42 - 72.42 \\ - 15x = - 15 \\ x = 1$

г)

$28.32 - 4.9(x - 2.7) - 5.83 = 8.1(x + 1.2) \\ 28.32 - 4.9x + 13.23 - 5.83 = 8.1x + 9.72 \\ 35.72 - 4.9x = 8.1x + 9.72 \\ - 4.9x - 8.1x = 9.72 - 35.72 \\ - 13x = 9.72 - 35.72 \\ - 13x = - 26 \\ x = 2$