30/210:35/210:42/210 eching

$$\frac { 30 } { 210 } : \frac { 35 } { 210 } : \frac { 42 } { 210 }$$

Baholash

$$\frac{30}{7}\approx 4,285714286$$

Yechim qadamlari

\frac{\frac{30}{210}}{\frac{35}{210}} ni \frac{42}{210} ga bo'lish \frac{\frac{30}{210}}{\frac{35}{210}} ga k'paytirish \frac{42}{210} ga qaytarish.

$$\frac{\frac{30}{210}\times 210}{\frac{35}{210}\times 42}$$

\frac{30}{210} ulushini 30 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{\frac{1}{7}\times 210}{\frac{35}{210}\times 42}$$

\frac{210}{7} hosil qilish uchun \frac{1}{7} va 210 ni ko'paytirish.

$$\frac{\frac{210}{7}}{\frac{35}{210}\times 42}$$

30 ni olish uchun 210 ni 7 ga bo‘ling.

$$\frac{30}{\frac{35}{210}\times 42}$$

\frac{35}{210} ulushini 35 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{30}{\frac{1}{6}\times 42}$$

\frac{42}{6} hosil qilish uchun \frac{1}{6} va 42 ni ko'paytirish.

$$\frac{30}{\frac{42}{6}}$$

7 ni olish uchun 42 ni 6 ga bo‘ling.

$$\frac{30}{7}$$

Omil

$$\frac{2 \cdot 3 \cdot 5}{7} = 4\frac{2}{7} = 4,285714285714286$$