Answer:
Its C. d=1
Explanation:
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-1 =d
d – 10 – 2d + 7 = 8 + d – 10 – 3d
Combine like terms
-3d -3 = -2d -2
Add 3d to each side
-3d -3 +3d= -2d -2+3d
-3 = d-2
Add 2 to each side
-3+2 = d-2+2
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