Question

(x-3 13/21)+2 10/21=7 12/21​

Answer 1

Ответ:

X=8 15/21

Пошаговое объяснение:

X-3 13/21=7 12/21 -2 10/21

X-3 13/21=5 2/21

X=5 2/21 + 3 13/21

X= 8 15/21

Answer 2

To solve the equation $(x - \frac{3}{21}) + \frac{2}{21} = \frac{7}{21}$, you can follow these steps:

1. Combine like terms on the left side of the equation by adding the fractions:

   $(x - \frac{3}{21}) + \frac{2}{21} = \frac{7}{21}$

   $(x - \frac{3}{21} + \frac{2}{21}) = \frac{7}{21}$

   Now, simplify the fractions inside the parentheses:

   $(x - \frac{1}{21}) = \frac{7}{21}$

2. Simplify the fractions on both sides of the equation. You can divide both the numerator and denominator by their greatest common factor (7 in this case):

   $x - \frac{1}{21} = \frac{7}{21}$

   $x - \frac{1}{21} = \frac{1}{3}$

3. To isolate the variable $x$, add $\frac{1}{21}$ to both sides of the equation:

   $x - \frac{1}{21} + \frac{1}{21} = \frac{1}{3} + \frac{1}{21}$

   $x = \frac{8}{21}$

So, the solution to the equation is $x = \frac{8}{21}$.