4/7+(-21/2)+(+1/2)-(-13/7) eching

$$\frac { 4 } { 7 } + ( - 2 \frac { 1 } { 2 } ) + ( + \frac { 1 } { 2 } ) - ( - 1 \frac { 3 } { 7 } )$$

Baholash

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Yechim qadamlari

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

$$\frac{4}{7}-\frac{4+1}{2}+\frac{1}{2}-\left(-\frac{1\times 7+3}{7}\right)$$

5 olish uchun 4 va 1'ni qo'shing.

$$\frac{4}{7}-\frac{5}{2}+\frac{1}{2}-\left(-\frac{1\times 7+3}{7}\right)$$

7 va 2 ning eng kichik umumiy karralisi 14 ga teng. \frac{4}{7} va \frac{5}{2} ni 14 maxraj bilan kasrlarga aylantirib oling.

$$\frac{8}{14}-\frac{35}{14}+\frac{1}{2}-\left(-\frac{1\times 7+3}{7}\right)$$

\frac{8}{14} va \frac{35}{14} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{8-35}{14}+\frac{1}{2}-\left(-\frac{1\times 7+3}{7}\right)$$

-27 olish uchun 8 dan 35 ni ayirish.

$$-\frac{27}{14}+\frac{1}{2}-\left(-\frac{1\times 7+3}{7}\right)$$

14 va 2 ning eng kichik umumiy karralisi 14 ga teng. -\frac{27}{14} va \frac{1}{2} ni 14 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{27}{14}+\frac{7}{14}-\left(-\frac{1\times 7+3}{7}\right)$$

-\frac{27}{14} va \frac{7}{14} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-27+7}{14}-\left(-\frac{1\times 7+3}{7}\right)$$

-20 olish uchun -27 va 7'ni qo'shing.

$$\frac{-20}{14}-\left(-\frac{1\times 7+3}{7}\right)$$

\frac{-20}{14} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{10}{7}-\left(-\frac{1\times 7+3}{7}\right)$$

7 hosil qilish uchun 1 va 7 ni ko'paytirish.

$$-\frac{10}{7}-\left(-\frac{7+3}{7}\right)$$

10 olish uchun 7 va 3'ni qo'shing.

$$-\frac{10}{7}-\left(-\frac{10}{7}\right)$$

-\frac{10}{7} ning teskarisi \frac{10}{7} ga teng.

$$-\frac{10}{7}+\frac{10}{7}$$

0 olish uchun -\frac{10}{7} va \frac{10}{7}'ni qo'shing.

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Omil

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