3n=27+3
you can do anything as long as you do it to both sides
3n=27+3
add like terms
27+3=30
3n=30
divide both sides by 3
n=10
Why this is so easy
Ok so, 75/5=15
15*7 =105 so the answer is 105 pages
It’s an arithmetic sequence. They subtract 13 each time
X=31/12. First add 7/4 to both sides. Then you simplify them, and your answer.
