Help me with these equations to find x?

Question

it says
Solve each equation symbolically fir x. Use another method to verify your solution.

1. 8-13 / x+5 = 2

2. 2(3-x) / 4 - 8 = -7.75

3. 11 + 6(x+5) / 9 = 42

Answer 1

For these, isolate the rational expression (the fraction part) and cross multiply:

1. 8 - (13/(x + 5)) = 2
13/(x + 5) = -6
13 = -6(x + 5)
13 = -6x - 30
43 = -6x
x = -43/6

2. 2(3 - x)/4 - 8 = -7.75
(3 - x)/2 = 62
3 - x = 124
x = -121

3. 11 + 6(x + 5) / 9 = 42
2(x + 5)/3 = 31
2(x + 5) = 93
x + 5 = 46.5
x = 41.5