П+ 215= 729
п = 729- 215
п = 514
б - 688 = 12
б= 688+12
б= 700
в* 14= 350
в = 350:14
в =25
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<span>0,(12)=12/99=4/33</span>
<span>7,5(4)=7,5+0,0(4)=30/4+4/90=15/2+2/45=679/90</span>
<span>или 7,5(4)=(754-75)/90=679/90</span>
<span>1,0(12)=(1012-10)/990=1002/990=334/330</span>
<span>0,(35)=35/99</span>