Question

I don't know how to calculate. Pls help me!
thanks ​

Answer 1

Explanation:

`□ / (1)/(2) = (1)/(5) * □`

`x / (1)/(2) = (1)/(5) * x`

`( (x)/(1) )/(2) = (1)/(5) x`

`(x)/(2) = (1)/(5) x`

`(x)/(2) = (1x)/(5)`

`(x)/(2) = (x)/(5)`

`10 * (x)/(2) = 10 * (x)/(5)`

`5x = 2x`

`5x - 2x = 2x - 2x`

`3x = 0`

`(3x)/(3) = (0)/(3)`

`x = 0`

The answer is 0

Answer 2

Explanation:

Let the unknown number is x. So, we can write the equation like this.

`? / (1)/(2) = (1)/(5) * ?`

`x / (1)/(2) = (1)/(5) * x`

`x * (2)/(1) = (x)/(5)`

`2x = (x)/(5)`

`\:`

—Now, find the value of x.

`2x = (x)/(5)`

`5 *2x = x`

`10x = x`

`10x - x = 0`

`9x = 0`

`x = (0)/(9)`

`x = 0` IS THE ANSWER