Clara simplifies (8b-4r)-(2b-r) and says the result is 6b-5r. What error did Clara make?
2 answers:
Clara forgot to distribute the - sign to- (2b-r) through all the terms the answer would be 6b+3r
Answer:
Clara makes error after opening the bracket she did not changes the sign of r .
Correct simplification of (8b-4r)-(2b-r) is 6b- 3r .
Step-by-step explanation:
As given the expression in the question be
= (8b-4r)-(2b-r)
Open the bracket
= 8b - 4r - 2b + r
Solving the above
= 6b - 3r
Clara makes error after opening the bracket she did not changes the sign of r .
Therefore the correct simplification of (8b-4r)-(2b-r) is 6b- 3r .
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