Solve these equations the same as solving multistep equations,
for example
#6.
Add six to both sides
now the inequality says
f < 5
now solve the second equation
F-4 Is equal to, or greater than 2
Add four to both sides
now the equation says:
F is equal to, or greater than 6
so your two answers are
f < 5 and F is equal to, or greater than 6