Answer:
[tex]\large\boxed{\dfrac{1}{2}}[/tex]
Step-by-step explanation:
We know:
(-)(-) = (+)
(+)(-) = (-)(+) = (-)
(+)(+) = (+)
[tex]\dfrac{3}{8}-\left(-\dfrac{1}{8}\right)=\dfrac{3}{8}+\dfrac{1}{8}=\dfrac{3+1}{8}=\dfrac{4}{8}=\dfrac{4:4}{8:4}=\dfrac{1}{2}[/tex]
