Question

1/2-2/1=?............... ​

Answer 1

$\frac{1}{2} - \frac{2}{1} = \frac{1}{2} - \frac{2 \times 2}{1 \times 2} = \frac{1}{2} - \frac{4}{2} = - \frac{3}{2} = - 1 \frac{1}{2}$

Answer 2

1/2-2/1=1/2-1 1/2=-1 1/2

Либо если я неправильно понял, что ты имел в виду

1:2-2:1=0,5-2=-1,5

Answer 3

To solve this arithmetic expression, you need to find a common denominator for the two fractions. The common denominator for 2 and 1 is 2. Now, you can rewrite the expression as follows:

1/2 - 2/1

To make the denominators the same, convert the first fraction:

1/2 = 1/2 * 1/1 = 1/2

Now, the expression becomes:

1/2 - 2/2

Now that the denominators are the same, you can simply subtract the numerators:

1/2 - 2/2 = (1 - 2)/2 = -1/2

So, 1/2 - 2/1 = -1/2.