selahiwilliams selahiwilliams

10-12-2017
Mathematics

contestada

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

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valeriazapata200 valeriazapata200

10-12-2017

4b+4r-2b-r

4b-2b+4r-r

2b+3r

the mistake was that she add the 2 with 3 and got b+5r

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dvikhan dvikhan

08-07-2018

Ella incorrectly combined the r coefficients. The correctly simplified expression is b + 3r

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