Question

пожалуйста решите умоляю вас ​

Answer 1

Ответ:

$1)(k + 14 + 8k) \times 8 = 400 \\ (9k + 14) \times 8 = 400 \\ 9k + 14 = 400 \div 8 \\ 9k + 14 = 50 \\ 9k = 50 - 14 \\ 9k = 36 \\ k = 4 \\ 2)121 \div (5x - 4) = 11 \\ 5x - 4 = 121 \div 11 \\ 5x - 4 = 11 \\ 5x = 11 + 4 \\ 5x = 15 \\ x = 3 \\ 3)90 - 12y = 78 \\ 12y = 90 - 78 \\ 12y = 12 \\ y = 1$