Answer:
6
Step-by-step explanation:
The given expression is
[tex]3+(-h)+(-4)[/tex]
On simplification, we get
[tex]3-h-4[/tex]
On combining like terms, we get
[tex](3-4)-h[/tex]
[tex]-1-h[/tex]
We need to find the value of given expression where [tex]h=-7[/tex].
Substitute [tex]h=-7[/tex] in the above expression.
[tex]-1-(-7)[/tex]
[tex]-1+7[/tex]
[tex]6[/tex]
Therefore, the value of given expression is 6 where [tex]h=-7[/tex].