1) 100a + 0,9b = 1005 + 0,97/36 = 500 + 0,175 = 500,1752) a : 20/27 - 0,72b = 5 : 20/27 - 0,72 7/36 = 5 / (20/27) - 0,14 = 527/20 - 0,14 = 6,75 - 0,14 = 6,613) 9/8a - b : 35/144 = 9/85 - 7/36 : 35/144 = 45/8 - 7/36 144/35 = 45/8 - 28/5 = 225/40 - 224/40 = 1/404) 3,2 : a - 81/84b = 3,2 / 5 - 81/84 7/36 = 0,64 - 1/4 7/3 = 0,64 - 7/12 = 0,64 - 0,5833 = 0,0567
1) 100a + 0,9b = 1005 + 0,97/36 = 500 + 0,175 = 500,175
2) a : 20/27 - 0,72b = 5 : 20/27 - 0,72 7/36 = 5 / (20/27) - 0,14 = 527/20 - 0,14 = 6,75 - 0,14 = 6,61
3) 9/8a - b : 35/144 = 9/85 - 7/36 : 35/144 = 45/8 - 7/36 144/35 = 45/8 - 28/5 = 225/40 - 224/40 = 1/40
4) 3,2 : a - 81/84b = 3,2 / 5 - 81/84 7/36 = 0,64 - 1/4 7/3 = 0,64 - 7/12 = 0,64 - 0,5833 = 0,0567