This is a conjunction. you can solve them separately then join them.
2(3-x) + 5 ≤ 39
6 - 2x + 5 ≤ 39
11 - 2x ≤ 39
-11 -11
-2x ≤ 28
/-2 /-2
x ≥ -14 notice the ≤ switch directions because I divided by a negative
or
-14 ≤ x
2(x - 3) + 5 ≤ 39
2x -6 + 5 ≤ 39
2x -1 ≤ 39
2x ≤ 40
/2 /2
x ≤ 20
and join them
-14 ≤ x ≤ 20
