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Ella simplifies (3b+4r)+(-2b-r) and says the result is b+5r. what error did ella make

Ella simplifies (3b+4r)+(-2b-r) and says the result is b+5r. what error did ella make
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Ella simplifies (3b+4r)+(-2b-r) and says the result is b+5r. what error did ella make

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User Raspi
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2 Answers

3 votes
Ella incorrectly combined the r coefficients. The correctly simplified expression is b + 3r
answered
User Alwyn
by
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5 votes
she added 4r and ,+r instead of 4r and -r
answered
User Ben Drury
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