oblicz  5/8 x 1 cała 1/3 4/12 x 3 całe 1/2 3 całe 1/6 x 5/12 4 całe 1/8 x 3/9 2 całe 3/5 x 1 cała 3/7 1cała 3/4 x 2 całe 2/3 1 cała 5/6 x 2 całe 4/7 2całe 1/2 x 3 całe 2/8 1 cała 7/20 x 2 całe 2/9 4 całe 8/11 x 5 całych 2/4

5/8 * 1  1/3 = 5/8 * 4/3 = 5/2 * 1/3 = 5/6 4/12 *3 1/2 = 1/3 * 7/2 = 7/6 3 1/6 * 5/12 = 19/6 * 5/12 = 95/72 = 1 23/72 4  1/8 * 3/9 = 33/8 * 3/9 = 11/8 * 3/3 = 33/24 = 1 9/24 = 1 3/8 2  3/5 * 1  3/7 = 13/5 * 10/7 = 13 * 2/7 = 26/7 = 3 5/7 1 3/4 * 2  2/3 = 7/4 * 8/3 = 7 * 2/3 = 14/3 = 4 2/3 1  5/6 * 2  4/7 = 11/6 * 18/7 = 11 * 3/7 = 33/7 = 4 5/7 2 1/2 * 3  2/8 = 5/2 * 26/8 = 5 * 13/8 = 65/8 = 8 1/8 1  7/20 * 2  2/9 = 27/20 * 20/9 = 3 4  8/11 *5  2/4 = 52/11 * 22/4 = 13 * 2 = 26