1 Answer

Punter Vicky · Answer 1 · 2021-08-31T20:23:27+0000

$C = (1)/(4)n( \: a(1) \: + \: a(2) \: ) \\$

Multiply sides by 4

$4 * C = 4 * (1)/(4)n( \: a(1) + a(2) \: ) \\$

$4C = n( \: a(1) + a(2) \: )$

Divided sides by n

$(4C)/(n) = (n)/(n)( \: a(1) + a(2) \: ) \\$

$(4C)/(n) = a(1) + a(2) \\$

Subtract sides - a (2)

$(4C)/(n) - a(2) = a(1) + a(2) - a(2) \\$

$(4C)/(n) - a(2) = a(1) \\$

$a(1) = (4C)/(n) - a(2) \\$

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Done ♥️♥️♥️♥️♥️

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