Question

x/3- 1/3=1/3
4/7+x/7=6/7
x-7/19=11/19
решите пожалуйста
срочно нужно​

Answer 1

Ответ:

$\frac{x}{3} - \frac{1}{3} = \frac{1}{3} \\\frac{x}{3} = \frac{1}{3} + \frac{1}{3} \\\frac{x}{3} = \frac{2}{3}$

$\frac{4}{7} + \frac{x}{7} = \frac{6}{7}\\\frac{x}{7} = \frac{6}{7} - \frac{4}{7} \\\frac{x}{7} = \frac{2}{7}$

$x$ - $\frac{7}{19} = \frac{11}{19}$

$x$ = $\frac{7}{19} + \frac{11}{19}$

$x$ = $\frac{18}{19}$

Answer 2

Ответ:

Х/3 - 1 / 3 = 1 /3

Х-1 / 3 = 1 /3

3 ×1 = 3 ( х -1 )

3 = 3х -3

3 +3 = 3х

6 = 3х

Х = 2

4/7 + х /7 = 6 /7

4+ х / 7 = 6/ 7

7 ×6 = 7 ( 4 +х )

42 = 28 + 7х

7х = 42 -28

7х = 14

Х = 2

Х- 7/ 19 = 11/ 19

Х = 11/19 + 7/19

Х =19/19

Х = 1

Пошаговое объяснение: