Respuesta :

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Answer:

r = 2

Step-by-step explanation:

15 = 2r + 8 + 3

15 = 2r + 11

4 = 2r

r = 2

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Answer:

r=2

Step-by-step explanation:

15 = 2(r + 4) + 3

Distribute

15 = 2r+8+3

Combine like terms

15=2r+11

Subtract 11 from each side

15-11 = 2r+11-11

4 = 2r

Divide by 2

4/2 =2r/2

2=r