Question

2124 : (12x + 9. 3?) + 436 = 448​

Answer 1

Непонятно, что за знак вопроса в условии...
Если Вы имели в виду
2124 : (12x + 9,3) + 436 = 448,
то
2124 : (12x + 9,3) = 448 - 436
2124 : (12x + 9,3) = 12
12(12х + 9,3) = 2124
144х + 111,6 = 2124
144х = 2124 - 111,6
144х = 2012,4
х = 2012,4 : 144
х = 13,975

Answer 2

To solve the equation, let's start by simplifying the expression on the left side:

(12x + 9.3?) + 436 = 448

We need to determine the value of 9.3? in order to proceed with the equation. Unfortunately, the information provided doesn't specify the digits in the number 9.3?. Could you please provide the missing digits or any additional information?