if the remainder is 10 when the integer n is divided by 18 , what is the remainder when 2 n is divided by 9 ?
"n = 18 k + 10 2 n = 2 ( 18 k + 10 ) = 4 k * 9 + 20 = 4 k * 9 + 2 * 9 + 2 = 9 j + 2 the answer is c ."
subtract(multiply(10, 2), 18)