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Question

tracy think that the rational expression 8 over r+8 can be simplest as 1 over r+1 use substitution if she is correct or not, if all the value of r.

Answer 1

The rational expression 8 over r+8 can be written as 1 over r + 1

8(r + 1) = r + 8

8r + 8 = r + 8

Subtract 8 from each side.

8r = r

Subtract r from each side.

8r - r = 0

7r = 0

r = 0

The expression will be correct only for r = 0.

The expression will not be correct for rest of the values of r.