Respuesta :

shaniciap16

Answer:

r=1

Step-by-step explanation:

3(2x-2)-r+3x=2(7x+1)-5x-9

6x-6-r+3x=14x+2-5x-9

9x-6-r=19x-7

-6-r=10x-7

-r=10-1

-r=9

-r/-1=9/-1

r/9=-9/9

r=1

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