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

Elsa's error was adding (4r+r) instead of subtracting (4r-r)

Step-by-step explanation:

we have

step 1

Eliminate the parenthesis

step 2

Group terms that contain the same variable

step 3

Combine like terms

therefore

Elsa's error was adding (4r+r) instead of subtracting (4r-r)

36/60

36/2=18

60/2=30

18/30

18/3=6

30/3=10

6/10

6/2=3

10/2=5

your final answer would be 3/5 of an

hope this !

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step-by-step explanation: