Answer:
6
Step-by-step explanation:
From question:
Dan has put his coins into 2 stacks
2 stacks in total
Each stack has the same number of coins
Number of coins in stack 1 = number of coins in stack 2
x = x
There are 12 coins total
Total number of coins in 2 stacks = 12
2x = 12
x = 6
There are six coins in one stack.
