if x , y , and z are positive integers , and 3 x = 5 y = 6 z , then the least possible value of x + y + z is
"take lcm of 3,5 and 6 = 30 now 3 x = 30 = > x = 10 5 y = 30 = > y = 6 6 z = 30 = > z = 5 10 + 6 + 5 = 21 . option a ."
add(add(divide(divide(multiply(multiply(3, 5), 6), const_2), 3), divide(divide(multiply(multiply(3, 5), 6), const_2), 5)), divide(divide(multiply(multiply(3, 5), 6), const_2), 6))