Question

(3-х)+5/6=2 3/6(4/9+х) - 1 1/9=3/9помогите пожалуйста​

Answer 1

Ответ:

Пошаговое объяснение:

(3-х)+5/6=2 3/6

3 - x = 2 3/6 - 5/6

3 - x = 1 2/3

x = 3 - 1 2/3

x = 1 1/3

====================

(4/9+х) - 1 1/9=3/9

4/9 + x = 3/9 + 1 1/9

4/9 + x = 1 4/9

x = 1 4/9 - 4/9

x = 1

Answer 2

Ответ:

$-x=7$, $x = - \frac{81}{13}$

Пошаговое объяснение:

$\frac{(3-x)+5}{6} = 2\frac{3}{6}\\\\\frac{3-x+5}{6} = \frac{15}{6}\\\\\\\frac{8-x}{6} = \frac{5}{2}\\\\\\2(8-x)=30\\8-x=15\\-x=15-8\\-x=7$

$\frac{4}{9+x} - 1 \frac{1}{9} = \frac{3}{9}, x \neq -9\\\\\frac{4}{9+x} - \frac{10}{9} = \frac{1}{3}\\\\\frac{4}{9+x} - \frac{1}{}+\frac{10}{9}\\\\\frac{4}{9+x} = \frac{13}{9}\\\\36 = 13 (9+x)\\\\36 = 117+13x\\\\-13x = 81\\\\x = - \frac{81}{13}$

Answer 3

Давайте разберем по порядку.

1) Сначала решим уравнение (3-х)+5/6=2+3/6: 3 - x + 5/6 = 2 + 1/2 3 - x + 5/6 = 2 + 3/6 3 - x + 5/6 = 2 + 1/2 3 - x + 5/6 = 2 + 3/6 3 - x + 5/6 = 2 + 1/2 3 - x + 5/6 = 2 + 3/6 3 - x = 2 + 3/6 - 5/6 3 - x = 2 - 2/6 3 - x = 2 - 1/3 - x = -1/3 x = 1/3 2) Теперь рассмотрим уравнение (4/9+х)-1+1/9=3/9: 4/9 + x - 1 + 1/9 = 3/9 4/9 + x - 1 + 1/9 = 1/3 x + 4/9 + 1/9 - 1 = 1/3 x + 5/9 - 1 = 1/3 x + 5/9 - 3/3 = 1/3 x + 5/9 - 9/9 = 3/9 x - 4/9 = 3/9 x = 3/9 + 4/9 x = 7/9

Итак, решение уравнений: 1) x = 1/3 2) x = 7/9