How do you solve and write the following in interval notation: 3x+3>21?

1 Answer
Jim G.
Jun 17, 2017

(6,+oo)

Explanation:

"isolate 3x by subtracting 3 from both sides"

3xcancel(+3)cancel(-3)>21-3

rArr3x>18

"divide both sides by 3"

(cancel(3) x)/cancel(3)>18/3

rArrx>6" is the solution"

"in interval notation " (6,+oo)

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