Respuesta :
Answer:
n=12
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
Answer:
n=4
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
