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Paul [167]
3 years ago
10

Clara simplifies (8b-4r)-(2b-r) and says the result is 6b-5r. What error did Clara make?

Mathematics
2 answers:
Mariulka [41]3 years ago
7 0
Clara forgot to distribute the - sign to- (2b-r) through  all the terms  the answer would be 6b+3r
mixas84 [53]3 years ago
6 0

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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