Answer:
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If we consider x having any other value then 0,1 or 2 then the answer is b.2x(x-1)
<em>Greetings from Brasil...</em>
isolating a:
(a + b + c)/3 = z
(a + b + c) = 3z
<h2>a = 3z - b - c</h2>
Answer:
a or c
Step-by-step explanation: