Answer: 7
Step-by-step explanation:

P-23=-3
+23 +23
P=20
so the answer is A
1. 7/10(1/5=2/10)
2. 1/12(1/2=6/12)
2(3x-4) = 5x+6
First, expand the bracket.
6x-8=5x+6
Next, move the variables to the same side.
x-8=6
Move the -8 to the other side, change to +
x=6+8
x=14
Charlie’s solution is incorrect. When expanding the bracket, he changed the - to a +.