Question

A number decreased by twelve is twice the opposite of ten? What is it?

Answer 1

The Number is -8.

Explanation:

Let the number be x.

Now given:

A number decreased by twelve;

It means 12 is subtracted from the number.

Hence the equation can be framed as;

`x-12`

Also given;

twice the opposite of ten

Opposite of 10 = -10

Twice the opposite of 10 means 2 is multiplied with opposite of 10.

Hence twice the opposite of ten =
`2*-10=-20`

Now A number decreased by twelve is twice the opposite of ten

framing it in equation form we get;

`x-12=-20`

Solving the above equation we get;

`x=-20+12\\x=-8`

Hence the Number is -8.