Respuesta :
[tex]-5-r=1+2r[/tex]
[tex]-r=1+2r+5[/tex]
[tex]-r=2r+6[/tex]
[tex]-r-2r=6 [/tex]
[tex]-3r=6[/tex] [tex]|\text{Isolate r}[/tex]
[tex]r=-2[/tex]
[tex]-r=1+2r+5[/tex]
[tex]-r=2r+6[/tex]
[tex]-r-2r=6 [/tex]
[tex]-3r=6[/tex] [tex]|\text{Isolate r}[/tex]
[tex]r=-2[/tex]
r=-2 because you can add the 5 to the one and that cancels out the -5 on the left, now your equation is -r=6+2r so you can subtract the 2r from both sides and that leaves you with -3r=6 all there is to do now is divide by -3 on both sides
