The difference of twice a number and 10 is at least 27 .

Question

The difference of twice a number and
10
is at least
27
.

Answer 1

We have the difference of twice a number (2x) and 10... 2x-10 ... is at least 27

2x-10≥27 will be our inequality.  At least means that it can be 27 or larger.

 

2x-10≥27

Add 10 to both sides

2x ≥ 37

Divide both sides by 2

x ≥ 37/2

    or

x ≥ 18 1/2

 

If we put in 37/2 for x in our inequality we get 27≥27   any larger number for x

will give us a larger outcome so this is correct