Respuesta :

mkersten
as follows
r-6=7
+6 +6
r= 13

Hi! These are the steps to find your answer:

r - 6 = 7

r - 6 + 6 = 7 + 6

r = 13

Check your answer:

13 - 6 = 7

7 = 7

Hope this helps!

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