1/4+1/6-2/9 eching

$$\frac { 1 } { 4 } + \frac { 1 } { 6 } - \frac { 2 } { 9 }$$

Baholash

$$\frac{7}{36}\approx 0,194444444$$

Yechim qadamlari

4 va 6 ning eng kichik umumiy karralisi 12 ga teng. \frac{1}{4} va \frac{1}{6} ni 12 maxraj bilan kasrlarga aylantirib oling.

$$\frac{3}{12}+\frac{2}{12}-\frac{2}{9}$$

\frac{3}{12} va \frac{2}{12} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{3+2}{12}-\frac{2}{9}$$

5 olish uchun 3 va 2'ni qo'shing.

$$\frac{5}{12}-\frac{2}{9}$$

12 va 9 ning eng kichik umumiy karralisi 36 ga teng. \frac{5}{12} va \frac{2}{9} ni 36 maxraj bilan kasrlarga aylantirib oling.

$$\frac{15}{36}-\frac{8}{36}$$

\frac{15}{36} va \frac{8}{36} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{15-8}{36}$$

7 olish uchun 15 dan 8 ni ayirish.

$$\frac{7}{36}$$

Omil

$$\frac{7}{2 ^ {2} \cdot 3 ^ {2}} = 0,19444444444444445$$