-4r-11=4r+21
Move 4r to the other side
Sign changes from +4r to -4r
-4r-4r-11=4r-4r+21
-4r-4r-11=21
-8r-11=21
Move -11 to the other side
Sign changes from -11 to +11
-8r-11+11=21+11
-8r=21+11
-8r=32
Divide both sides by -8
-8r/-8=32/-8
Answer: r=-4
Answer:
r=-4
Step-by-step explanation:
-4r-11=4r+21
Subract 4r from each side.
-4r-4r-11=21
-8r-11=21
Add 11 to each side.
-8r=21+11
-8r=32
Divide both sides by -8.
r=[tex]\frac{32}{-8}[/tex]
r=-4
