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Mathematics
Aylin
22 December, 13:38
3 (2d - 7) = (2 + 4d) 2
i need the steps
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Greta Padilla
22 December, 17:17
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3 (2d - 7) = (2 + 4d) 2
distribute
3*2d - 3*7 = 2*2 + 2*4d
multiply
6d - 21 = 4 + 8d
subtract 6d from each side
6d-6d-21 = 4 + 8d-6d
-21 = 4+2d
subtract 4 from each side
-21 - 4 = 4+2d-4
-25 = 2d
divide by 2
-25/2 = d
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