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Mathematics 7 Online
OpenStudy (anonymous):

13d-53=9d+19

OpenStudy (anonymous):

\[13d-9d=19+53\]

OpenStudy (anonymous):

13d - 53 = 9d + 19 13d - 9d = 19+53 4d = 72 d = 72/4 d = 18

OpenStudy (karatechopper):

d=18

OpenStudy (anonymous):

d=18

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