50 дм + 6 дм= 56дм (это писать не надо)
56 м. > 50дм + 6 дм
4,5*(10х+5,5)=90
10х+5,5= 90/4,5
10х+5,5=20
х=(20-5,5)/10
х=1,45
<span> 60 градусов-1/3
<span>120 градусов-2/3
<span>150 градусов-5/18
<span>45 градусов-1/4</span></span></span></span>
<span><span><span><span><span>80 градусов-4/9</span></span></span></span></span>
<span><span><span><span><span><span>12 градусов-1/15</span></span></span></span></span></span>
<span><span><span><span><span><span><span>15 градусов-1/12</span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span>18 градусов-1/10 </span></span></span></span></span></span></span></span>36 градусов-1/5
<span><span><span><span><span><span><span><span><span><span>20 градусов-1/9</span></span></span></span></span></span></span></span></span></span>
<span>1 2/9-1 1/3+1 5/18=
1)1 2/9-1 1/3=11/9-4/3=11/9-12/9=-1/9
2)-1/9+1 5/18=-2/18+23/18=21/18=1 3/18=1 1/6
</span>