Question

If 2x = 5y + 3, express y in terms of x.

Answer 1

That means solve for y.
2x = 5y + 3
First, switch sides:
5y + 3 = 2x
You need to isolate y, so first subtract 3 from both sides:
5y = 2x - 3
Now divide both sides by 5:
y = (2/5)x - 3/5