The expression ( s + s + s - 3 ) ÷ 3 is equivalent to .
A
(s + 1)
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B
(s - 3)
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C
(s - 1)
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Solution
The correct option is C (s - 1) ( s + s + s - 3 ) ÷ 3 The expression in the bracket = s + s + s - 3 = 3s - 3 Hence ( s + s + s - 3 ) ÷ 3 = ( 3s - 3 ) ÷ 3 = 3 x ( s - 1 ) ÷ 3 = ( s - 1 )