if a ( a + 6 ) = 7 and b ( b + 6 ) = 7 , where a ≠ b , then a + b =
"a ( a + 6 ) = 7 = > we have a = 1 or - 7 also b ( b + 6 ) = 7 = > b = 1 or - 7 given a ≠ b 1 ) when a = 1 , b = - 7 and a + b = - 6 1 ) when a = - 7 , b = 1 and a + b = - 6 answer choice b"
add(divide(7, const_10), divide(7, divide(7, const_10)))