if | 4 x + 6 | = 42 , what is the sum of all the possible values of x ?
"there will be two cases 4 x + 6 = 42 or 4 x + 6 = - 42 = > x = 9 or x = - 12 sum of both the values will be - 12 + 9 = - 3 answer is b"
divide(subtract(42, 6), 4)