х - число,
2/3 * х = 4/9 * 225,
2/3 * х = 4 * 25,
2/3 * х = 100,
х = 100 : 2/3,
х = 100 * 3/2,
х = 50 * 3,
х = 150
х - число,
2/3 * х = 4/9 * 225,
2/3 * х = 4 * 25,
2/3 * х = 100,
х = 100 : 2/3,
х = 100 * 3/2,
х = 50 * 3,
х = 150