Question 1010118

Identify the error in the problem. 
Solve 5y-10x=15 for y.
Step 1: 5y=15+10x
Step 2: y=15+10x/5 
Step 3: y=3+10x
<pre>Step 2 error: 15 on the right also needs to be divided by 5, not just 10x on that side