0.6(2x+1) =-1, 8(3x-4)

1)   0,3x+8=2       0.3x=2-8     0.3x=-6    x=-6/0.3      x =  -20

2)   4-x=1+4x        -x-4x=1-4      -5x=-3    x=-3/(-5)     x  =  0.6

3)    7-2(x+3)=9-6x      -2x+6x=9-7+6     4x=8    x=8/4     x  =  2

4)     4(x-0.5)-2(x+0.3)=-2.6       4x-2x = -2.6+2+0.6     2x = 0    x=0/2     x  =  0

5)      0.4x-6= -12         0.4x = -12+6      0.4x = -6     x  =  -6/0.4        x   =   -15

6)       x+6=5+4x    x-4x=5-6        -3x = -1     x  =  -1/(-3)         x  =  1/3

7)       13-3(x+1) = 4-5x      -3x +5x = 4-13+3         2x = -6     x  =  -6/2     x  =  -3

8)        0.2(3x-5)-0.3(x-1) = -0.7     0.6x - 0.3x = -0.7+1-0.3   0.3x = 0    x = 0/0.3      x  =  0

1)        (7y-2)/(5y-4)gt;2

           (7y-2 -2(5y-4)) / (5y-4) gt; 0

           1) случай    7y-2-10y+8 gt; 0      -3ygt;-6   ylt;-6/(-3)       y lt; 2             0.8 lt; x lt; 2

                                 5y-4  gt; 0                 5y gt; 4   ygt;4/5             y gt; 0.8

            2)случай     7y-2-10y + 8lt;0       -3ylt;-6    ygt;-6/(-3)    y gt; 2      Пустопорожнее  огромное количество

                                  5y-4 lt; 0                  5y lt; 4      ylt;4/5         y lt; 0.8

Ответ.         ( 0,8;      2)

2)          8y+2 -(5y+3) gt; 5

              8y - 5y gt; 5-2+3

              3y gt; 6

              y gt; 6/3

              y gt; 2

3)          3*(2y+1.5)-(3+2y+1.5) gt; 8

              6y-2y gt; 8-4.5+4.5

              4y gt; 8

              ygt; 8/4

              y  gt;  2

4)          4*(3y-0.5) - 4 -3y-0.5 gt;3.5

              12y - 3y  lt;  3.5 +2+4+0.5

               9y  lt;  10

                y lt;  10/9