Solve for y
y=\frac{1}{15}\approx 0.066666667
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y=-\frac{1}{3}+\frac{2}{5}
Add \frac{2}{5} to both sides.
y=-\frac{5}{15}+\frac{6}{15}
Least common multiple of 3 and 5 is 15. Convert -\frac{1}{3} and \frac{2}{5} to fractions with denominator 15.
y=\frac{-5+6}{15}
Since -\frac{5}{15} and \frac{6}{15} have the same denominator, add them by adding their numerators.
y=\frac{1}{15}
Add -5 and 6 to get 1.
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