Answer:
Hi, there your answer will be p=6
Step-by-step explanation:
Step 1: Add 5 to both sides.
4p−5+5=19+5
4p=24
Step 2: Divide both sides by 4.

p=6
The answer is 7x/12 - 1/2. Its the first option in your picture. Hope this helps .
Answer:
yes you did that correctly
The coordinates midpoint of AB are (1,2)
To solve this we need to use this formula:
a(b+c)=ab+ac
5(7+3x)-12=35+15x-12=15x+23