Answer:
 Yellow couners Dara have 5.
Explanation:
Given : Dara has 12 red couners. She has 7 more red counters than yellow counters. 
To find : How many yellow counters does dara have .
Solution : We have given 
 Dara has red couners = 12.
Let the yellow couners = x 
According to question :
Red = 7 more than yellow.
Red = 7 + yellow .
12 = 7 + x .
On subtracting both sides by 7.
x = 12 -7 .
x = 5.
Therefore, Yellow couners Dara have 5.