To find the value of "a", we can solve the equation:
1 = (a-13) / -6
First, we can multiply both sides of the equation by -6 to eliminate the denominator:
-6 * 1 = a - 13
-6 = a - 13
Next, we can add 13 to both sides of the equation to isolate "a":
-6 + 13 = a - 13 + 13
7 = a
Therefore, the value of "a" is 7.
1 = a-13
_____
-6
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