Answer:
19
(17 + 21)/2 = 19
Thus, the number halfway between 17 and 21 is 19.
Step-by-step explanation:
What you do is cross multiply
1.5 x p & 6 x 10
after divide 1.5 on each side to get p alone
1.5p/1.5 & ___/1.5
you should get your answer to what p equals
hope this helped
Answer: 
Explanation:
Follow PEMDAS in reverse to undo what's happening to x.
We first add 1 to both sides, then divide both sides by 5 to fully isolate x.
Refer to the steps below to see what I mean.

The inequality sign stays the same the entire time. The only time it flips is when you divide both sides by a negative number.
The solution set for x is anything -3 or larger.
If x was an integer, then we could say the solution set is {-3, -2, -1, 0, 1, 2, 3, 4, 5, 6, ...}