[tex]\large \mathfrak{Solution : }[/tex]
[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]
[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]
[tex] \mathfrak{6 + 4 ( 19 - 15 )}[/tex]
[tex] \mathfrak{6+4\times 4 }[/tex]
[tex] \mathfrak{6+16 }[/tex]
[tex] = \large\boxed{ \boxed{ \bf22 }}[/tex]