Question

XX - X x 2 = 378

 X=?

Answer 1

xx - x . 2 = 378

x . 11 - x . 2 = 378

x . 9 = 378

x = 378 : 9 

x = 42

Answer 2

\(xx-x\times2=378\)

\(x\times11-x\times2=378\)

\(x\times9=378\)

\(x=42\)