(2/3-19/6+05) eching

$$( \frac { 2 } { 3 } - \frac { 19 } { 6 } + 05 )$$

Baholash

$$-\frac{5}{2}=-2,5$$

Yechim qadamlari

3 va 6 ning eng kichik umumiy karralisi 6 ga teng. \frac{2}{3} va \frac{19}{6} ni 6 maxraj bilan kasrlarga aylantirib oling.

$$\frac{4}{6}-\frac{19}{6}+0\times 5$$

\frac{4}{6} va \frac{19}{6} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{4-19}{6}+0\times 5$$

-15 olish uchun 4 dan 19 ni ayirish.

$$\frac{-15}{6}+0\times 5$$

\frac{-15}{6} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{5}{2}+0\times 5$$

0 hosil qilish uchun 0 va 5 ni ko'paytirish.

$$-\frac{5}{2}+0$$

-\frac{5}{2} olish uchun -\frac{5}{2} va 0'ni qo'shing.

$$-\frac{5}{2}$$

Omil

$$-\frac{5}{2} = -2\frac{1}{2} = -2,5$$