Question

Which expression is equivalent to (3b + 2r) + (4b + r)?

Answer 1

I think it should be 7b+3r

Answer 2

It would be 7b+ 3r. 
Since you have to distribute them. you would add 4 with 3 which is seven and 2 with a. A is a number but since you dont know, it is a one. So it would be B
Hopefully this helps!:)
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