A+18=7a
Subtract a on both sides
18=6a
Divide both sides by 6
3=a
Check the answer:
3 + 18= 7(3)
21=21
Hope this helps!! :)
The hotel which is more expensive and where there is more people.
The answer is D for #10 and C for #11.
Find the LCD (least common denominator)
15 in this case
Convert to have 15 as denominators
1/3 = 5/15
2/5 = 6/15
Subtract
(6/15) - (5/15)
1/15
He had 1/15 less