ANSWER
a) One Solution
b) the solution is x=2
EXPLANATION
The given equation is:

We expand to get;

Group similar terms;

This implies that,

Divide both sides by 10 to obtain,

If the line has a slope of -9, the slope of any parallel line will also be -9.
Parallel lines always have the same slope.
Answer:
x = 7
Step-by-step explanation:




It’s blue because it has the highest range and the capacity which makes clear and easy for us :P