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гюйс

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5.
а <0   наименьшее. остальные  >0

6.
а наибольшее

7.
b>0
b>a
b=0
b=a

8.
0,3(1,2х-0,5у)-1,5(0,4х+у)=0,36х-0,15у-0,6х-1,5у= - 0,24х-1,65у

-2,4(2,5a-1.5b)+0.5(1.8b+5.6a)= -6a-3.6b+0.9b+2.8a= - 3.2a-2.7b

-1.8(3.5m-5)-6.5(0.8-0.4m)= - 6.3m-9-5.2+2.6m= - 3.7-14.2

1/9(1 1/2 c-3/8)-(1 5/6-1 1/3 c)=1/6 c-1/24-1 5/6+1 1/3 c =1 2/3 c-1 4/6

1.2(5/6 k+0.4n)-1.8(5/9 k-0.3n)=k+0.48n-k+0.54n=1.02n

(1/6 a+6.5)-(2 7/9 a+3 1/3)=3/18 a-2 14/18 a+6 3/6-3 2/6= - 2 11/18 a+3 1/6

3/7(0.56x-4.9y)-6/13(0.52x-3.9y)=6/25 x-2.1y-6/25x+1.8y= 0.3y

6(1/4k-5/6)-15(0.6-2 1/3 k)=1.5 k-5-9+21k=22.5k-14