Question

(-4)+[15+(-3)]=[-4+15]+____​

Answer 1

☆ Let the number be x

$-4+[15+(-3)]$ $=$ $[-4+15]+<strong>x</strong>$

Solution :-

☆ Let the number be x.

$\hookrightarrow\:-4+[15+(-3)]\:=\:[-4+15]+x$

$\hookrightarrow\:-4+12\:=\:11+x$

$\hookrightarrow\:8\:=\:11+x$

$\hookrightarrow\:8-11\:=\:x$

${\boxed{\large{\bold{x=-3}}}}$