To find the 57th term in the sequence defined by the expression \( 12 - 2n \), where \( n \) is the term number (with \( n = 1 \) for the first term):
-
Substitute \( n = 57 \) into the expression: \[ a_{57} = 12 - 2 \times 57 \]
-
Calculate \( 2 \times 57 \): \[ 2 \times 57 = 114 \]
-
Now substitute this value back into the expression: \[ a_{57} = 12 - 114 \]
-
Finally, perform the subtraction: \[ a_{57} = 12 - 114 = -102 \]
Therefore, the 57th term of the sequence is \(-102\).