SOLUTION: 1. 8d + 2 < 5d – 7

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Question 57869This question is from textbook prentice hall mathematics
: 1. 8d + 2 < 5d – 7 This question is from textbook prentice hall mathematics

Answer by tutorcecilia(2152) About Me  (Show Source):
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8d + 2 < 5d – 7 [Solve for d]
8d + 2 -2< 5d – 7 -2
8d < 5d – 9
8d-5d < 5d-5d – 9
3d < – 9
3d/3 < – 9/3
d<-9
.
Check by plugging in numbers greater than, less than and equal to 9 to check for a truthful statement.