Răspuns:
1) a) 5/7
b) 0,24/0(6)=24/100:6/9=24/100*9/6=6/25*9/6=9/25
c) 8/1:1/3=8/1*3/1=24
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2) c) P=36m=> 2L+2l=36m
l= 1/2•L
=>L=2l
2•2l+2l=36
4l+4l=36
6l=36
l=6m
=>L=2•6=12m
R: 12/6=2
4) a)
16. ----- ireductibila
27
b) 115=115•10=115•5=577
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0,2 2
c) 3,(6)=36-3 = 33
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9 9
0,(3)=3 =1
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9 3
33/9 = 33 • 3 = 99 = 11
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113 9 1 9