maths Question

Let the mystery number =N

{[N+38] x 4 - 26,729} =209,423

Solve for N:
4 (N+38)-26729 = 209423

4 (N+38) = 4 N+152:
4 N+152-26729 = 209423

Add like terms. 152-26729 = -26577:
4 N-26577 = 209423

Add 26577 to both sides:
4 N+(26577-26577) = 209423+26577

26577-26577 = 0:
4 N = 209423+26577

209423+26577 = 236000:
4 N = 236000

Divide both sides of 4 N = 236000 by 4:
(4 N)/4 = 236000/4

4/4 = 1:
N = 236000/4

The gcd of 236000 and 4 is 4, so 236000/4 = (4×59000)/(4×1) = 4/4×59000 = 59000:
Answer: |N = 59,000

I assume the case is , is the decimal point.

$\begin{array}{rllll}\\4(38+x)&-&26,729&=&209,423\\&&4(38+x)&=&236,152 \\&&38+x&=&59,038\\&&x&=&21,038\end{array}$