Answer: can't get enough info.
a = 11
Step-by-step explanation:
a + 15 = 3a - 7
-a -a
15 = 2a - 7
+7 +7
22 = 2a
/2 /2
11 = a
Sorry im only in middle school i dont know this
Answer:
there are 3600 seconds in one hour
Answer:
a and d
Step-by-step explanation:
it has a ratio comparison