Lavenna murtoluvut samannimisiksi, laske ja muunna vastaus sekaluvuksi, jos mahdollista. Supista vastaus, jos mahdollista.

a. [[$\dfrac{1}{10}$]] + ? ) [[$\dfrac{1}{2}$]] = + = (? =

b. ? ) [[$\dfrac{3}{5}$]] + [[$\dfrac{7}{15}$]] = +

= =

c. [[$\dfrac{3}{8}$]] + ? ) [[$\dfrac{1}{4}$]] = + =

d. ? ) [[$\dfrac{2}{4}$]] + ? ) [[$\dfrac{1}{3}$]] = + = (? =