Answer:
A=-6
Explanation:
A - 4= 3A + 8
-4 = 2A + 8: subtract A from -3A; (-A* - 3A)
*Because you are moving "A" to the other side it becomes negative; leading to subtraction*
-12=2A
Subtract "8" from -4
A=-6
Solve for "A" by dividing
Test to see it work
A - 4 = 3A + 8
(-6) - 4= 3(-6) + 8
-10 = -10: true statement