Three times a number decreased by three is between -39 and 57.

Question

I don't even know where to start please help thank you. 

Answer 1

Hi Jasmine, you solve this type of problem by setting up an inequality. Let x represent the unknown number.

 

The inequality to solve:

 

-39 ≤ 3x - 3 ≤ 57

 

Solve for x.

 

Questions?