[tex]\huge\boxed{\sf{Hello\:there!}}[/tex]
-a-(+b)=-a-b
Let's use this rule to solve our math problem:
-5-(+23)
-5-23
-28
[tex]\huge\boxed{\boxed{Hope\:it\:helps!}}[/tex]
[tex]\huge\bold{Good\:luck!}[/tex]
[tex]\huge\mathfrak{LoveLastsAllEternity}[/tex]