2 green spaces, 2 star spaces, 2 question mark spaces
Answer:
what the expression, lmk in comments and then i will help you :)
Step-by-step explanation:
10 because 7 x 3 = 21 and 7 + 3 = 10 so your answer is 10
If we solve the left side of the given equation,
1/a + 1/b = 1/c
we get an answer of,
b+a / ab = 1/c
Since ab = c, we can conclude that b + a is 1. The average of these two numbers is equal to there sum divided by 2. The answer is therefore equal to 0.5.