Question

15 decreased by six times a number is -9 Number 24

Answer 1

1

Explanation:

Given: 15 decreased by six times a number is -9.

Lets assume the number be "x".

Now, putting the value in the equation to get the number.

six times a number = 6x

Then, 15 decreased by six times a number=
`(6x-15)`

Now,
`(6x-15)= -9`

Adding both side by 15

⇒
`6x= -9+15`

⇒
`6x= 6`

Cross multiplying

∴ x=
`(6)/(6) = 1`

Hence, the required number is 1.

Next subtituting the value in equation to check.

`(6x-15)= -9`

⇒
`(6* 1-15)= -9`

⇒
`(6-15)= -9`

∴
`-9= -9`