2( n+7)-7=9
multiply the bracket by 2
(2)(n)=2n
(2)(7)=14
2n+14-7=9
2n+7=9
move +7 to the other side
sign changes from +7 to -7
2n+7-7=9-7
2n=9-7
2n=2
divide both sides by 2 to get n by itself
2n/2=2/2
Answer:
n=1
