Answer:
- You could equal the equation to 0 and solve
- insert values for a until you get 0
- equal it to zero then subtract by 4a to put it on the other side and solve.
Step-by-step explanation:
- 4a - 12 = 0
+12 +12
4a = 12
/4 /4
a = 3
2. 4a-12 (just insert values until you get 0) (1,2,3,4,...)
3. 4a - 12 = 0
-4a -4a
-12 = -4a
/-4 /-4
a = 3
