if 2 / z = 2 / ( z + 1 ) + 2 / ( z + 64 ) which of these integers could be the value of z ?
"solving for z algebraically in this problem would not be easy . instead , we can follow the hint in the question ( “ which of these integers … ” ) and test each answer choice : a . 2 / 0 = 2 / 1 + 2 / 64 incorrect ( division by zero ) b . 2 / 1 = 2 / 2 + 2 / 65 incorrect c . 2 / 2 = 2 / 3 + 2 / 66 incorrect d . 2 / 3 = 2 / 4 + 2 / 69 incorrect e . 2 / 4 = 2 / 5 + 2 / 72 correct the correct answer is e , because it contains the only value that makes the equation work . notice how quickly this strategy worked in this case"
divide(64, add(add(2, 2), 1))