0,75+1/28+5/7 = 0,75 + 1/28 + 20/28 = 0,75 + 21/28 = 0,75 + 0,75 = 1,5
0,256+3/2-34 = 0,256 + 1,5 - 34 = 1,756 - 34 = -32,244
7/15+1/3-0,2 = 7/15 + 5/15 - 3/15 = 12/15 = 4/5 = 0,8
0,75+1/28+5/7 = 0,75 + 1/28 + 20/28 = 0,75 + 21/28 = 0,75 + 0,75 = 1,5
0,256+3/2-34 = 0,256 + 1,5 - 34 = 1,756 - 34 = -32,244
7/15+1/3-0,2 = 7/15 + 5/15 - 3/15 = 12/15 = 4/5 = 0,8