Question

Нужно решить за 10 минут 20 б

Answer 1

Ответ:

1) x = 16.25

x != 13

x + 13 = 9(x-13)

x + 13 = 9x - 117

x -9x + 13 = -117

-8x = -117 - 13

2) 13

x != 7

3x - 21 = x + 5

2x = 26

x = 13

3)0