Math Problem of the week

Congratulations to those who got last week's problem of the week correct...

 The Answer was 3.04 miles per hour The winners wereSara Chandler,  Ethan Graham,  Callie Johnson,  Molly Petersen, and Jeffrey Sass.  The next problem of the week is

Arithmetic Sequences….

The first three terms of an arithmetic sequence are 17x + 20, 18x – 3 and 20x + 1, in that order. 

What is the value of x?