A square's magic

OR

Just sum all of the numbers each row or each column. The answer is 15.

$1+2+3+4+5+6+7+8+9=45$ , and you put these numbers into 3 rows (or 3 columns), so the sum of each row (or column) is $45÷3=15$

$\begin{aligned} 4 + 9 + 2 & = 3 + 5 + 7 & = 8 + 1 + 6 = \color{#69047E}{\boxed{15}} \end{aligned}$

Tooe asy alrealdy even 1 year old also know how to solve u know!

All rows and coulombs sums are 15.

(1+2+3+...+9) : 3 = 45 : 3 = 15