105k views
4 votes
Ella simplifies (3 b + 4 r) + (negative 2 b minus r) and says the result is b Plus 5r. What error did Ella make?

User Oujesky
by
8.6k points

2 Answers

4 votes

Answer and step-by-step explanation:

So Ella starts out with with the equation:

(3b + 4r) + (-2b - r)

and results in b + 5r.

Let's solve for ourselves to see what Ella did wrong.

3b + 4r - 2b - r

4r - r = 3r

3b - 2b = b

b + 3r

User Oyabi
by
8.0k points
4 votes

Answer and Step-by-step explanation:

So Ella starts out with with the equation:

(3b + 4r) + (-2b - r)

and results in b + 5r.

Let's solve for ourselves to see what Ella did wrong.

3b + 4r - 2b - r

4r - r = 3r

3b - 2b = b

b + 3r

We can see that Ella mistakenly added the r and 4r to become 5r, instead of subtracting the two.

#teamtrees #WAP (Water And Plant)

User Brian Dupuis
by
7.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories