a: =(0,43+0,57)+(0,25+0,75)+(0,64+0,46)
=1+1+1,1=3,1
b: =56,3(2,4+8,9-1,3)=56,3x10=563
`43/100+25/100+64/100+57/100+75/100+46/100`
`=>``(43/100+57/100)+(25/100+75/100)+(64/100+46/100)`
`=>` `1 + 1 + 110/100`
`=>` `1/1 +1/1+110/100`
`=>` ` 2/1 + 110/100`
`=>` `310/100`
=>` `31/25`