algebra
posted by babygirl on .
using multiplication principle 2/5y=14/15

Is the y in the denominator?
When typing algebra, you need to distinguish between things like 2/(5y) and (2/5)*y
Parentheses can help you do that.
If you mean
(2/5)y=14/15
multiply both sides by 5/2.
y = 70/30 = 7/3