Oblicz sposobem takim :2,3+5/7= 2 3/10 +5/7 A) 4,2+1/4= 2,35+1/2= 3,203+1/4= 14 2/3+0,5= B) 2,35-3/4= 4,15-1 1/4= 31,105-1/8= 5/8-0,5=
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a.)
4,2+1/4=4 1/5+1/4=4 4/20+5/20= 4 9/20
2,35+1/2=2,35+0,5=2,4
3,203+1/4=3,203+0,25=3,228
14 2/3+0,5=14 2/3+1/2=14 4/6+3/6=15 1/6
b.)
2,35-3/4=2 7/20-3/4=2 7/20-15/20=1 3/5
4,15-1 1/4=4 3/20-1 1/4=4 3/20-1 5/20=2 9/10
31,105-1/8=31,105-0,125=30,08
5/8-0,5=5/8-1/2=5/8-4/8=1/8