Question

2 1/2 : 0,4=(4+x) : 1 3/5 6 класс​

Answer 1

Ответ

2 1/2:0,4=(4+х):1 3/5

2,5:0,4=(4+х):1,6

6,25=(4+х):1,6

4+х=6,25*1,6

4+х=10

Х=10-4

Х=6

Answer 2

Ответ:

Пошаговое объяснение:

2 * 1/2 : 0,4 = (4 + x) : 1 * 3/5 * 6

2/5 = (4 + x) : 3/30

0,4 = (4 + x) : 0,1

0,4 = (4 + x) * 10

0,4 : 10 = 4 + x

0,04 = 4 + x

x = 0,04 - 4

x = -3,96

Answer 3

It seems like you've provided an equation involving fractions and ratios:

$\frac{2\frac{1}{2}}{0.4} = \frac{4+x}{1\frac{3}{5}}$.

Let's solve it step by step:

1. Convert mixed numbers to improper fractions: $2\frac{1}{2} = \frac{5}{2}$ and $1\frac{3}{5} = \frac{8}{5}$.

2. Divide the fractions on the left side: $\frac{\frac{5}{2}}{0.4} = \frac{4+x}{\frac{8}{5}}$.

3. Divide the fraction on the right side: $\frac{5}{2} \div 0.4 = \frac{4+x}{\frac{8}{5}}$.

4. Simplify both sides: $\frac{5}{0.4} = \frac{4+x}{\frac{8}{5}}$.

5. Calculate the left side: $\frac{5}{0.4} = 12.5$.

6. Substitute the value into the equation: $12.5 = \frac{4+x}{\frac{8}{5}}$.

7. Solve for $x$: $12.5 \times \frac{8}{5} = 4 + x$, $20 = 4 + x$, $x = 20 - 4 = 16$.

So, the value of $x$ that satisfies the equation is $16$.