<span>9 1/5-(5x-4 1/2):11 1/4=8 14/15
</span>
<span>(5x-4 1/2):11 1/4= 5Х:45/4 - 9/2:45/4 = 4/15X - 2/5
46/5 -</span><span><span>4/15X + 2/5</span> = 134/15
-4/15X = 134/15-46/5-2/5
-4/15X = 134/15 - 48/5
-4/15X = 134/15-144/15
-4/15X=-10/15
X = 10/15:4/15
X=2 1/2
5/12 y+3 2/3+7/8 y= 5 1/18</span>
5/12y+7/8y=91/18 - 11/3
30/72y+56/72y = 364/72 - 264/72
86/72y = 100/72
y = 100/72:86/72=100:86= 1 14/86=1 7/43
-3-9+6x=1
-12+6x=1
6x=13
X=13/6
X=2, одна шестая
1 дм = 10 см
1 дм - 6 см = 10 см - 6 см = 4 см
Ответ: 4 см
25*4*6=(25*4)*6=100*6=600
125*25*32=125*25*4*8=(125*8)*(25*4)=1000*100=100000
75*36=25*3*4*9°(25*4)*(3*9)=100*27=2700
96*50=2*48*50=(2*50)*48=100*48=4800