oblicz 4,6 + 2całe i 1/4 4 całe i 1/3 +0,3 7,35 - 2całe i 1/8 9całe i 7/12 - 5,125 0,75 *4/5 5/6 *1,6 2,5 : 5/6 4/5 : 0,5
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6,85 139/30 -- -------- 6/10 1 1/5 2,64 1 1/3
4,6 + 2 i 1/4 = 4,6+2,25= 6,85
4 i 1/3 +0,3 = 13/3 + 3/10 = 130/30+ 9/30 = 139/30= 4 i 19/30
7,35 - 2 i 1/8= 7,35- 2,125=5,225
9 i 7/12- 5,125 =9 i 7/12 - 5 i 1/8 =115/12 - 41/8= 230/24- 123/24= 107/24 =4 i 11/24
0,75*4/5 =3/4*4/5=12/20
5/6*1,6= 5/6*16/10= 80/60= 1 i 20/60
2,5:5/6=25/10 : 5/6= 25/10*6/5= 150/50= 3
4/5:0,5=4/5:5/10=4/5*10/5=40/25=1 i 15/25
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