Question

If you subtract 1 upon 2 from a number and multiply the result by 1 upon 2, you get 1upon 8, what is the number?

plz solve this equation
only equation
help plzzzz​

Answer 1

Answer:

3/4.

Step-by-step explanation:

Here, we have a number about which it is given that If you subtract 1 upon 2 from a number and multiply the result by 1 upon 2, you get 1upon 8.

Now let the number be x.

First lets subtract 1/2 from the number.

This gives,

(x - 1/2)

Now lets multiply the result by 1/2.

This gives,

(x - 1/2) * 1/2.

Now the result is 1/8.

This means,

1/2(x - 1/2) = 1/8.

Solving the bracket,

x - 1/2 = 2x - 1 whole upon 2.

Now we have

1/2(2x - 1/2) = 1/8

1/2 is in multiplication on LHS.

It will be transposed to RHS.

So we have

2x - 1/2 = 1/8 * 2

2x - 1/2 = 1/4.

Now send 2 to RHS.

2x - 1 = 2/4

2x - 1 = 1/2

2x = 1/2 + 1

2x = 3/2

x = 3/4.

Hope it helped.