(-21/4)+(-7/12) eching

$$( - 2 \frac { 1 } { 4 } ) + ( - \frac { 7 } { 12 } )$$

Baholash

$$-\frac{17}{6}\approx -2,833333333$$

Yechim qadamlari

8 hosil qilish uchun 2 va 4 ni ko'paytirish.

$$-\frac{8+1}{4}-\frac{7}{12}$$

9 olish uchun 8 va 1'ni qo'shing.

$$-\frac{9}{4}-\frac{7}{12}$$

4 va 12 ning eng kichik umumiy karralisi 12 ga teng. -\frac{9}{4} va \frac{7}{12} ni 12 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{27}{12}-\frac{7}{12}$$

-\frac{27}{12} va \frac{7}{12} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-27-7}{12}$$

-34 olish uchun -27 dan 7 ni ayirish.

$$\frac{-34}{12}$$

\frac{-34}{12} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{17}{6}$$

Omil

$$-\frac{17}{6} = -2\frac{5}{6} = -2,8333333333333335$$