Question

Розв'яжи рівняння:
1\2 + X = 5\6
5\6 - X = 1\3
X - 1\5 = 3\10

Answer 1

Ответ:

$\frac{1}{2} +x=\frac{5}{6} \\ x=\frac{5}{6}-\frac{1}{2}=\frac{5}{6}-\frac{3}{6}=\frac{2}{6} \\ x=\frac{2}{6}$

$\frac{5}{6} -x=\frac{1}{3} \\ x=\frac{5}{6} -\frac{1}{3}=\frac{5}{6} -\frac{2}{6}=\frac{3}{6} \\ x=\frac{3}{6}$

$x-\frac{1}{5} =\frac{3}{10} \\ x=\frac{3}{10}+\frac{1}{5}=\frac{3}{10}+\frac{2}{10}=\frac{5}{10} \\ x=\frac{5}{10}$

Answer 2

Ответ:

1/2 + x = 5/6

x = 5/6 - 1/2

x = 2/6

x = 1/3

5/6 - x = 1/3

-x = 1/3 - 5/6

- x = 2/6 - 5/6

-x = -3/6

x = 3/6

x = 1/2

x - 1/5 = 3/10

x = 3/10 + 1/5

x = 3/10 + 2/10

x = 5/10

x = 1/2