(1 11/24+13/36)×1, 44-8/15×0, 5625=2, 32
1) 35/24+13/36=105+26/72=131/72
2) 131/72×144/100=131/50=2,62
3) 8/15×5625/10000=3000/10000=3/10=0,3
4) 2, 62-0, 3=2, 32
4) =(ax-b)+(3b-3a)=x(a-b)+3(b-a)=(a-b)(x-3) .
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(Х-9)^2 это ФСУ, поэтому это равно
Х^2-18х+81
2)
![\frac{-0,8}{1,2x+2,8} = \frac{3}{4x-2}](https://tex.z-dn.net/?f=+%5Cfrac%7B-0%2C8%7D%7B1%2C2x%2B2%2C8%7D+%3D+%5Cfrac%7B3%7D%7B4x-2%7D+)
- 3,2x + 1,6 = 3,6x + 8,4
- 3,2x - 3,6x = 8,4 - 1,6
- 6,8x = 6,8
x = - 1
3)
![\frac{8-y}{6}*6 + \frac{5-4y}{3}*6 = \frac{y+6}{2}* 6](https://tex.z-dn.net/?f=+%5Cfrac%7B8-y%7D%7B6%7D%2A6+%2B++%5Cfrac%7B5-4y%7D%7B3%7D%2A6+%3D++%5Cfrac%7By%2B6%7D%7B2%7D%2A+6+++)
8 - y + 10 - 8y = 3y + 18
- y - 8y - 3y = 18 - 8 - 10
- 12y = 0
y = 0