Question

1) x-1 2/9=2 5/122) x : 9=14:33) 14:x=21:9​

Answer 1

Ответ:

1. 3 23/36

2. х=42

3. х=6 объяснения не знаю ответы взяла с инета

Answer 2

Let's solve each of these equations one by one:

1. $x - \frac{1}{2} \frac{9}{9} = \frac{2}{5} \frac{12}{12}$

First, simplify the fractions on the left side of the equation:

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

Now, add $\frac{1}{2}$ to both sides of the equation to isolate (x):

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

$x = \frac{2}{5} + \frac{1}{2}$

To add these fractions, find a common denominator, which is 10:

$x = \frac{4}{10} + \frac{5}{10}$

Now, add the fractions:

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

So, $x = \frac{9}{10}$.

2. $x : 9 = 14 : 33$

To solve for $x$, you can set up a proportion:

$\frac{x}{9} = \frac{14}{33}$

Now, cross-multiply to solve for $x$:

$x \cdot 33 = 14 \cdot 9$

$33x = 126$

Now, divide both sides by 33 to isolate $x$:

$x = \frac{126}{33}$

Simplify the fraction:

$x = \frac{42}{11}$

So, $x = \frac{42}{11}$.

3. $14 : x = 21 : 9$

Again, set up a proportion:

$\frac{14}{x} = \frac{21}{9}$

Cross-multiply:

$14 \cdot 9 = 21 \cdot x$

$126 = 21x$

Now, divide both sides by 21 to solve for $x$:

$x = \frac{126}{21}$

Simplify the fraction:

$x = 6$

So, $x = 6$.