cześć tu matma :D
a)5/7 razy 4 i 2/3 + 5/6 : 1 i 1/9
b) (2 i 1/4 - 1 i 2/3) : (1/6 + 2/9
na jutro :D plsss
a)
5/7*4 i 2/3+5/6:1 i 1/9=5/7*14/3+5/6*9/10=5/1*2/3+1/1*3/2=10/3+3/2=3 i 1/3+1 i 1/2=3 i 2/6 + 1 i 3/6=4 i 5/6
b)
(2 i 1/4-1 i 2/3):(1/6+2/9)=( 2 i 3/12-1 i 8/12):(3/18+4/18)=3 i 11/12:7/18=47/12:7/18=47/12*7/18= 329/216=1 i 113/216=1 i 1/2
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a)
5/7*4 i 2/3+5/6:1 i 1/9=5/7*14/3+5/6*9/10=5/1*2/3+1/1*3/2=10/3+3/2=3 i 1/3+1 i 1/2=3 i 2/6 + 1 i 3/6=4 i 5/6
b)
(2 i 1/4-1 i 2/3):(1/6+2/9)=( 2 i 3/12-1 i 8/12):(3/18+4/18)=3 i 11/12:7/18=47/12:7/18=47/12*7/18= 329/216=1 i 113/216=1 i 1/2