math problem
posted by
Lavern on
.
please solve
4x is greater than or equal to 20

math problem 
christy,
subtract 4 from each side and then you are left with x is greater than or equal to 16

math problem 
Steve,
Since it's 4x (not 4+x) you need to divide by 4, not subtract 4:
4x >= 20
x >= 5