solve it just as you would an equation:
42 = -6d
-7 = d
However, multiplying and dividing by negative values changes the direction of the inequality. So, you have
42 < -6d
7 < -d
-7 > d or d < -7
Since you can always add and subtract without changing the direction, the direction-switch is just a shorthand way to move items from one side to the other:
42 < -6d
42+6d < 0
6d < -42
d < -7
42 < –6d
A. d < –7
B. d < 36
C. d > –7
D. d < –48
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2 answers
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