Question

-4r-11=4r+21 pls help
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Answer 1

r=-4

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=
`(32)/(-8)`

r=-4

Answer 2

-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