3/5-(1/6+5/18) eching

$$\frac { 3 } { 5 } - ( \frac { 1 } { 6 } + \frac { 5 } { 18 } )$$

Baholash

$$\frac{7}{45}\approx 0,155555556$$

Yechim qadamlari

6 va 18 ning eng kichik umumiy karralisi 18 ga teng. \frac{1}{6} va \frac{5}{18} ni 18 maxraj bilan kasrlarga aylantirib oling.

$$\frac{3}{5}-\left(\frac{3}{18}+\frac{5}{18}\right)$$

\frac{3}{18} va \frac{5}{18} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{3}{5}-\frac{3+5}{18}$$

8 olish uchun 3 va 5'ni qo'shing.

$$\frac{3}{5}-\frac{8}{18}$$

\frac{8}{18} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{3}{5}-\frac{4}{9}$$

5 va 9 ning eng kichik umumiy karralisi 45 ga teng. \frac{3}{5} va \frac{4}{9} ni 45 maxraj bilan kasrlarga aylantirib oling.

$$\frac{27}{45}-\frac{20}{45}$$

\frac{27}{45} va \frac{20}{45} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{27-20}{45}$$

7 olish uchun 27 dan 20 ni ayirish.

$$\frac{7}{45}$$

Omil

$$\frac{7}{3 ^ {2} \cdot 5} = 0,15555555555555556$$