Question

1) × : 3 1 /5 = 4 2) 1 1/2 :× = 3/8 3) ×:0,8 = 2 1/4

Answer 1

1)х:3 1/5=4

х=4*3 1/5=4/1*16/5=64/5=12 4/5

2)11/2:х=3/8

х=11/2:3/8=11/2 * 8/3=88/6=44/3=14 2/3

3)х:0,8=2 1/4

х=2 1/4*0,8=9/4*8/10=72/40=9/5=1 4/5

Answer 2

Ответ:

Пошаговое объяснение:

1) х= 4*3  1/5

х=12  4/5

12 4/5:3 1/5=4

2)х=11/2:2 1/4

х=2 4/9

11/2:2 4/9=3/8

3)х=2 1/4*0,8

х=1  4/5

Answer 3

Let's solve each of the equations:

1. $\times : \frac{3}{5} = 4$

To find the value of $\times$, you can multiply both sides of the equation by the reciprocal of $\frac{3}{5}$, which is $\frac{5}{3}$:

$\times \times \frac{5}{3} = 4 \times \frac{5}{3}$

This simplifies to:

$\times = \frac{20}{3}$

So, $\times = \frac{20}{3}$.

2. $\frac{1}{2} : \times = \frac{3}{8}$

To find the value of $\times$, you can multiply both sides of the equation by the reciprocal of $\frac{1}{2}$, which is $2$:

$\frac{1}{2} \times 2 = \frac{3}{8} \times 2$

This simplifies to:

$\times = \frac{3}{4}$

So, $\times = \frac{3}{4}$.

3. $\times : 0.8 = 2 \frac{1}{4}$

To find the value of $\times$, you can divide both sides of the equation by 0.8:

$\frac{\times}{0.8} = 2 \frac{1}{4}$

This simplifies to:

$\times = 2 \frac{1}{4} \times 0.8$

First, convert the mixed number to an improper fraction:

$\times = \frac{9}{4} \times 0.8$

Now, multiply:

$\times = \frac{9}{4} \times 0.8 = \frac{9}{4} \times \frac{8}{10} = \frac{72}{40}$

Simplify the fraction:

$\times = \frac{36}{20}$

So, $\times = \frac{36}{20}$.