Answer:
6
Step-by-step explanation:
Answer:
-3=a
Step-by-step explanation:
-a+4a-9=8a+6
3a-9=8a+6
3a-9-6=8a+6-6
3a-15=8a
3a-3a-15=8a-3a
-15=5a
-15/5=5a/5
-3=a
Answer:
6 : 15
Step-by-step explanation:
10/14, 15/21, 20/28, 25/35
Just multiply numerator and denominator by the same number