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2009-12-02T19:39:10+01:00
X +2[3/7]=5[1/8]
x=5⅛-2[3/7]
x=5 7/56 - 2 24/56
x=2 39/54

4[3/10]+ x =10[1/5]
x=10[1/5] - 4[3/10]
x= 10,2-4,3
x=5,9

x - 3[5/6]= 1[4/9]
x=1[4/9]+3[5/6]
x= 1 8/18 + 3 15/18
x=5 ⅓

x -17/4 =7[5/12]
x=7[5/12] + 4¼
x=7[5/12] + 4 3/12
x= 11⅔

10[2/9]- x =1[1/8]
x=10[2/9]- 1[1/8]
x= 10 16/72 - 1 9/72
x=9 7/72

12[1/12]- x=1[1/6]
x=12[1/12] - 1[1/6]
x= 10 11/12