Помогите пожалуйста решить: 1)4 3/8-3 3/7-9,5+5 1/8
2)4 9/14-5/12-3 3/14-3 1/12+1 1/14
3)3 1/3-0,8-2 3/4+2,5+0,3+1 7/12
2)4 9/14-5/12-3 3/14-3 1/12+1 1/14
3)3 1/3-0,8-2 3/4+2,5+0,3+1 7/12
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1) 4 3/8 - 3 3/7 - 9,5 + 5 1/8 = 35/8 - 24/7 - 19/2 + 41/8 = 245/56 - 192/56-532/28 + 287/56 = -192/56 = - 3 3/72) 4 9/14 - 5/12 - 3 3/14 - 3 1/12 + 1 1/14 = (4 9/14 - 3 3/14 + 1 1/14) - (5/12 + 3 1/12) = 2 7/14 - 3 6/12 = 2 1/2 - 3 1/2 = - 1
3) 3 1/3 - 0,8 - 2 3/4 + 2,5 + 0,3 + 1 7/12 = (3 1/3 - 2 3/4 + 1 7/12) - (0,8 -2,5 - 0,3) = (3 4/12 - 2 9/12 + 1 7/12) - ( - 2) = 2 2/12 + 2 = 4 2/12 = 4 1/6