2/5+x=9/10 eching

$$\frac { 2 } { 5 } + x = \frac { 9 } { 10 }$$

x uchun yechish

$$x=\frac{1}{2}=0,5$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

Ikkala tarafdan \frac{2}{5} ni ayirish.

$$x=\frac{9}{10}-\frac{2}{5}$$

10 va 5 ning eng kichik umumiy karralisi 10 ga teng. \frac{9}{10} va \frac{2}{5} ni 10 maxraj bilan kasrlarga aylantirib oling.

$$x=\frac{9}{10}-\frac{4}{10}$$

\frac{9}{10} va \frac{4}{10} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$x=\frac{9-4}{10}$$

5 olish uchun 9 dan 4 ni ayirish.

$$x=\frac{5}{10}$$

\frac{5}{10} ulushini 5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$x=\frac{1}{2}$$