Answer:
the answer is1
Step-by-step explanation:
ok its actually simple
you add the 1 by moving it to the left of the 0 to get
1+0=r
you do the problem to get
1=r
so the answer is
1
[tex]\huge \boxed{r=1}[/tex]
[tex]0=r-1[/tex]
Adding 1 to both sides.
[tex]0+1=r-1+1[/tex]
[tex]1=r[/tex]
