-15(-2a/5-4/3)= eching

$$- 15 ( - \frac { 2 a } { 5 } - \frac { 4 } { 3 } ) =$$

Baholash

$$6a+20$$

Qisqa yechim qadamlari

Ifodalarni qo‘shish yoki ayirish uchun ularni yoyib, maxrajlarini bir xil qiling. 5 va 3 ning eng kichik umumiy karralisi 15. -\frac{2a}{5} ni \frac{3}{3} marotabaga ko'paytirish. \frac{4}{3} ni \frac{5}{5} marotabaga ko'paytirish.

$$-15\left(-\frac{3\times 2a}{15}-\frac{4\times 5}{15}\right)$$

-\frac{3\times 2a}{15} va \frac{4\times 5}{15} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$-15\times \frac{-3\times 2a-4\times 5}{15}$$

-3\times 2a-4\times 5 ichidagi ko‘paytirishlarni bajaring.

$$-15\times \frac{-6a-20}{15}$$

15 va 15 ni qisqartiring.

$$-\left(-6a-20\right)$$

-6a-20 teskarisini topish uchun har birining teskarisini toping.

$$-\left(-6a\right)-\left(-20\right)$$

-6a ning teskarisi 6a ga teng.

$$6a-\left(-20\right)$$

-20 ning teskarisi 20 ga teng.

$$6a+20$$

Kengaytirish

$$6a+20$$

Qisqa yechim qadamlari

Ifodalarni qo‘shish yoki ayirish uchun ularni yoyib, maxrajlarini bir xil qiling. 5 va 3 ning eng kichik umumiy karralisi 15. -\frac{2a}{5} ni \frac{3}{3} marotabaga ko'paytirish. \frac{4}{3} ni \frac{5}{5} marotabaga ko'paytirish.

$$-15\left(-\frac{3\times 2a}{15}-\frac{4\times 5}{15}\right)$$

-\frac{3\times 2a}{15} va \frac{4\times 5}{15} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$-15\times \frac{-3\times 2a-4\times 5}{15}$$

-3\times 2a-4\times 5 ichidagi ko‘paytirishlarni bajaring.

$$-15\times \frac{-6a-20}{15}$$

15 va 15 ni qisqartiring.

$$-\left(-6a-20\right)$$

-6a-20 teskarisini topish uchun har birining teskarisini toping.

$$-\left(-6a\right)-\left(-20\right)$$

-6a ning teskarisi 6a ga teng.

$$6a-\left(-20\right)$$

-20 ning teskarisi 20 ga teng.

$$6a+20$$