The first one is a reflection over the x-axis :)
Answer:
x = 1/18
Step-by-step explanation:
2/3x = 12
multiply both sides by 3x
2/3x(3x) = 12(3x)
2 = 36x
x = 1/18
5n-4=11
1/2n+15=20
4n+8=12
unless those _ are supposed to be negative signs
then it would be
1/2n+15=-20
and 4n+8=-12
No, for example 8-1. If you do the Commutative property, it would be 1-8; which would be a negative number. Associate property is basically the same thing; so no, you can't.
