Question

oblicz: 2 7/10+1 3/4+4/5

4-2 2/5

2-1 5/8

5-3 1/7

6 1/6-2 3/4

3 1/4-2 2/3

4 1/2-2 3/5

Answer 1

  2 7/10+1 3/4+4/5 = 54/20+35/20+16/30=105/20=5i1/4

4-2 2/5 = 1i3/5

2-1 5/8= 3/8

5-3 1/7= 1i 6/7

6 1/6-2 3/4=37/6-11/4=74/12-33/12=41/12=3i5/12

3 1/4-2 2/3= 13/4-8/3=39/12-32/12=7/12

4 1/2-2 3/5=9/2-13/5=45/10-26/10=19/10=1i9/10