Given data:
It is given that a+b=c and b=5.
Now according to substitution property if x and y are equal then x can be placed instead of y anywhere.
So, if
[tex]\begin{gathered} a+b=c,\text{ and b=5} \\ \end{gathered}[/tex]
then we can write 5 instead of b in th equation by substitution property.
[tex]a+5=c[/tex]
So, the correct answer is B) substituion
