Question

Max adds 7 to a number the. Múltiples the sum by -4 the result is 3 times the same number write and since an equation to find the number n what is the number

Answer 1

The number is -4.

Explanation:

Let the number be n.

Given:

Max adds 7 to a number.

hence it is given as n+7

Multiply's the sum by -4 the result is 3 times the same number.

Hence the equation can be written as;

`-4(n+7)=3n`

Now Solving the above equation to find value of n we get;

`-4(n+7)=3n\\-4n-28=3n\\-4n-3n=28\\-7n=28\\n=(28)/(7)=-4`

The value of n is -4.

Now when we add 7 to number -4 we get answer as 3.

And when the sum is multiplied by -4 we get answer -12.

Also 3 times of number is equal to 3 multiplied by -4 we get answer as -12.

Hence when the sum is multiplied by -4 it is equal to 3 times of same number.

Hence from above we can say that the number is -4.