Combination of probabilities from conditional information

Let $X$ and $Y$ be discrete random variables with $P(Y\in\{0,1\})=1$, $P(X=0)=\frac34$, $P(X=1)=\frac14$, $P(Y=1|X=1)=\frac34$, $P(Y=0|X=0)=\frac78$. Then $3P(Y=1)-P(Y=0)$ equals __________________