Answer:
10
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
It has been 1 hour and 20 minutes.
HOW I FOUND MY ANSWER:
7:10 to 8:10 = 1 hour
8:10 to 8:30 = 20 minutes
(1 hour + 20 minutes = 1 hr and 20 min.)
HOPE THIS HELPED
:)
6 - a =

(9a - 18)
First, simplify

to

/ Your problem should look like:
Second, multiply both sides by 3. / Your problem should look like:
Third, expand. / Your problem should look like:
Fourth, add 3a to both sides. / Your problem should look like:
Fifth, simplify 9a - 18 + 3a to 12a - 18. / Your problem should look like:
Sixth, add 18 to both sides. / Your problem should look like:
Seventh, add 18 + 18 to get 36. / Your problem should look like:
Eighth, divide both sides by 12. / Your problem should look like:
Ninth, since 3 goes into 12 to get 36, simplify

to 3. / Your problem should look like:
Tenth, switch sides. / Your problem should look like:

Answer:
a = 3 (one solution)