24madelineford 24madelineford

29-09-2020
Mathematics

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r + 15 = 4r – 6.
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jmirandaguerra17 jmirandaguerra17

29-09-2020

r=7 (refer to image for steps)

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29-09-2020

r + 15 = 4r- 6
r + 21 = 4r
21 = 3r
7 = r

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