Answer:
12−3xStep-by-step explanation:
A = (a+b)/2
2*A = 2*(a+b)/2 ... multiply both sides by 2
2A = a+b
2A-a = a+b-a ... subtract 'a' from both sides to isolate b
2A-a = b
b = 2A-a
Answer: b = 2A-a
See below for the proof of the equation
<h3>How to prove the equation?</h3>
The equation is given as:

Take the LCM

Expand

Evaluate the like terms

Rewrite as:

Factorize the numerator

Divide
2(a - b)= 2(a - b)
Both sides are equal
Hence, the equation
has been proved
Read more about equations at:
brainly.com/question/2972832
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25% because the first FLIP, it was a fifty-fifty chance. FLIP again and the chances are divided by two since you can only get 2 things, either heads or tails.
Answer:just drag across
Step-by-step explanation: