General solution of equations : $\large\frac{dy}{dx}$$+py=0$

Question

$(a)\;y.e^{\int pdx}= \int Q.e^{\int pdx}dx+c \\ (b)\;x.e^{\int pdy}= \int Q.e^{\int pdy}dy+c \\ (c)\;y.e^{\int pdy}= \int Q.e^{\int pdy}dx+c \\ (d)\;y.e^{\int pdx}= e^{\int pdx}$