Number 1 is x=8!!
2 is pretty confusing so I hope someone else can answer two as I have answered 1!
You multiply fractions simply by multiplying numerators and denominators with each other:

Answer:
x < 4
OR
x > - 2.25
= 4 > x > - 2.25
Step-by-step explanation:
5x - 19 < 1
5x < 1 + 19
5x < 20
x < 20/5
x < 4
OR
- 4x + 3 < - 6
- 4x < - 6 - 3
- 4x < - 9
x > 9/- 4
x > - 2.25
The two lines intersect at point B, hope this helps.
Your answer would be x = 12.41
6.15 (x - 8.86) = 21.83
*6.15 * 6.15
6.15x - 54.49 = 21.83
+ 54.49 + 54.49
6.15x = 76.32
/6.15 /6.15
x = 12.41