If a(a - 6) = 7and b(b -6) = 7, where a ≠ b, then a + b =
Select the correct option.
A) −48 B) −2 C) 6 D) 9 E) 48
i.e. if a = -1 then b = 7   or if a = 7 then b = -1   But in each case a+b = -1+7= 
<gadget id="calculator">-1+7</gadget>
<output>6</output>
6   Answer: option 6
<result>C</result>
If a(a - 6) = 7and b(b -6) = 7, where a ≠ b, then a + b =