20*85div285*15*10^-6 eching

$$20 \times 85 \div 285 \times 15 \times { 10 }^{ -6 }$$

Baholash

$$\frac{17}{190000}\approx 0,000089474$$

Yechim qadamlari

1700 hosil qilish uchun 20 va 85 ni ko'paytirish.

$$\frac{1700}{285}\times 15\times 10^{-6}$$

\frac{1700}{285} ulushini 5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{340}{57}\times 15\times 10^{-6}$$

\frac{1700}{19} hosil qilish uchun \frac{340}{57} va 15 ni ko'paytirish.

$$\frac{1700}{19}\times 10^{-6}$$

-6 daraja ko‘rsatkichini 10 ga hisoblang va \frac{1}{1000000} ni qiymatni oling.

$$\frac{1700}{19}\times \frac{1}{1000000}$$

\frac{17}{190000} hosil qilish uchun \frac{1700}{19} va \frac{1}{1000000} ni ko'paytirish.

$$\frac{17}{190000}$$

Omil

$$\frac{17}{2 ^ {4} \cdot 5 ^ {4} \cdot 19} = 8,947368421052632 \times 10^{-5}$$