3/8--281/2= eching

$$\frac { 3 } { 8 } - - 28 \frac { 1 } { 2 } =$$

Baholash

$$\frac{231}{8}=28,875$$

Yechim qadamlari

56 hosil qilish uchun 28 va 2 ni ko'paytirish.

$$\frac{3}{8}-\left(-\frac{56+1}{2}\right)$$

57 olish uchun 56 va 1'ni qo'shing.

$$\frac{3}{8}-\left(-\frac{57}{2}\right)$$

-\frac{57}{2} ning teskarisi \frac{57}{2} ga teng.

$$\frac{3}{8}+\frac{57}{2}$$

8 va 2 ning eng kichik umumiy karralisi 8 ga teng. \frac{3}{8} va \frac{57}{2} ni 8 maxraj bilan kasrlarga aylantirib oling.

$$\frac{3}{8}+\frac{228}{8}$$

\frac{3}{8} va \frac{228}{8} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{3+228}{8}$$

231 olish uchun 3 va 228'ni qo'shing.

$$\frac{231}{8}$$

Omil

$$\frac{3 \cdot 7 \cdot 11}{2 ^ {3}} = 28\frac{7}{8} = 28,875$$