Question

Тетянка
150
(3x + 9) - 12 = 38,
150
(3x + 9) = 38 + 12,
150 (3x + 9) = 50,
3x + 9 = 150: 50,
3x + 9 = 30,
3x = 30 - 9,
3x = 21,
x = 21 : 3,
x = 7
Наталка
150 (3x + 9) - 12 = 38,
(150 (3x + 9) = 38 + 12,
150 (3x + 9) = 50,
3x + 9 = 50 . 150,
3x + 9 = 750,
3x = 750 - 9,
3x = 741,
x = 743 : 3,
x = 247

Answer 1

Відповідь:

Татьянка 66

Наталка 53