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7d - 12 + 2d + 3 = 18

Group the like terms for d on the left side. Move the integers to the right side remembering to reverse their signs (positive/negative)

7d + 2d = 18 + 12 - 3

Which becomes:

9d = 27

Divide each side by 9:

d = 3

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13y ago
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Q: What is d in this equation 7d-12 plus 2d plus 3 equals 18?
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