Five out of nine times two and three out of four minus seven out of four divided by nine out of five
5 / 9 * 11 / 4 = 55 / 36; 7 / 4 divided by 9 / 5 = 63 / 20; 55 / 36-63 / 20 = (55 * 20-63 * 36) / 720 = - 1268 / 720 = 317 / 180
5 / 9 * 11 / 4 = 55 / 36; 7 / 4 divided by 9 / 5 = 63 / 20; 55 / 36-63 / 20 = (55 * 20-63 * 36) / 720 = - 1268 / 720 = 317 / 180