Respuesta :

Advent5647

Answer:

- 2

Step-by-step explanation:

Step 1:

21r - 7 - r - 5 = - 52

Step 2:

20r - 12 = - 52

Step 3:

20r = - 40

Answer:

r = - 2

Hope This Helps :)

Navinash

7(3r-1) - (r+5) = - 52

21r - 7 - r - 5 = - 52

20r = - 52 +12

r = - 40/20

r = - 2

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