Question

Half the difference of 18 and a number n is equal to the sum of n and three. what is the value of n?

Answer 1

n=4

Step-by-step explanation:

(18-n)/2=n+3

2*((18-n)/2)=(n+3)*2

18-n=2n+6

+n +n

18 = 3n+6

-6 -6

12 =3n

÷3 ÷3

4=n

n=4

Answer 2

n=12

Step-by-step explanation:

First you have to write out the equation for the problem.

(18+n)/2=n+3

To get rid of the fraction, multiply both sides by 2.

18+n=2n+6

Now subtract n and subtract 6 from both sides and you will have your answer.

12=n