19. the sum of twelve and sixteen divided by the sum of three and four
20.the difference of twenty-two and six divided by the sum of five and three
21.the sum of thirty-six and fourteen divided by the product of two and five
22.the quotient of thirty-two and four divided by the sum of one and three
23.the sum of six and fifteen divided by 24.the difference of thirteen and nine
25.the difference of thirty-one and seventeen divided by the product of ten