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16 votes
16 votes
Solve the inequality.
3d-6>21?

User Rmdroid
by
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1 Answer

11 votes
11 votes

Answer:

d>9

Explanation:

You need to do inverse operations to isolate the variable (d)

3d-6>21

get ride of the six by doing its inverse. The opposite of subtraction is addition so you'd add 6 to both sides. this moves the six to the other side of the inequality sign

3d>27

now that the variable is isolated the final step is to divide by the coefficient (3). 3/3 is 1, effectively giving you d, and 27/3=9

d>9

in this case you do not flip the sign as you did not divide by a negative

User Kidshaw
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3.1k points