Posted by G on Tuesday, January 22, 2008 at 11:06am.
X/10+1.7=3.5
X/10+1.71.7=3.51.7
X/10=5.20
X/10 . 10/1= 5.20 . 10
Why is the answer 52?

Algebra  drwls, Tuesday, January 22, 2008 at 11:11am
Because X/10 = 5.2, which you already correctly derived.
The last step is to multiply both sides of the equation by 10.