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2m + 1 = m + 5
5 4 × 20
8m + 4 = 5m + 25
3m = 21
m = 7
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5 4
4 (2m + 1) = 5 (m + 5 )
8m + 4 = 5m + 25
8m - 5m = 25 - 4
3m = 21
m= 21/3
m= 7(D)
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