if x , y , and z are positive integers , and 2 x = 5 y = 7 z , then the least possible value of x + y + z is
"take lcm of 2,5 and 7 = 70 now 2 x = 70 = > x = 35 5 y = 70 = > y = 14 7 z = 70 = > z = 10 35 + 14 + 10 = 59 . option e ."
add(add(divide(divide(multiply(multiply(2, 5), 7), const_2), 2), divide(divide(multiply(multiply(2, 5), 7), const_2), 5)), divide(divide(multiply(multiply(2, 5), 7), const_2), 7))