Coplanar and line are the undefined terms needed to define parallel lines.
Answer:

Step-by-step explanation:
1. Move the negative sing to the left.

2. simplify 4/10 to 2/5.

3. Simplify.

Therefor, the answer is, -4/5
5(n-4)=(4n-12)
First: Distribute 5 into n and -4.
5(n-4)=(5n)+(5*-4)= 5n-20.
Second: Subtract 4n from both sides to eliminate the variable from the right side of the equation.
(5n-20)=(4n-12)
n-20=-12
Next: Add 20 to both sides to eliminate the constant from the left side of the equation.
n-20=-12
n=8
The unknown number is 8.
Answer:
Stuck In same question Jinx
Step-by-step explanation: