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x in (-oo:+oo)
(1/2)*(8-x) < 7.5 // - 7.5
(1/2)*(8-x)-7.5 < 0
1/2*(8-x)-7.5 < 0
1/2*(8-x)-7.5 < 0
-1/2*x-3.5 < 0
-1/2*x-3.5 < 0
-1/2*x-3.5 < 0 // + 3.5
-1/2*x < 3.5 // : -1/2
x > 3.5/(-1/2)
x > -7
(-oo:-7) (-7:+oo) -1/2*x-3.5 + -
x in (-7:+oo)
(-7:+oo)
| 10/(2i) | | -10=-5/9v | | 5.5w=82.5 | | e/12-7=13 | | 41.5+c=10c+1 | | 10/2i | | 13a-17b-9a-19b= | | -1.25t^2+2.1t+50.0=0 | | 1/3(8-c)7.5 | | x=y^2-12y+38 | | x^3+ax^2+bx+8=0 | | X+-88=-170 | | 0=2z^2+13z+21 | | 1.25t^2+2.1t+50.0=0 | | 19=4x+752 | | 6(x+5)=6(x+9) | | 4c-4+3=-17 | | 10r-14s-7r+18s= | | 2-8(-4+3x)=-34 | | 0=v^2+16v+64 | | 1.25t^2+2.1t-50.0=0 | | -32+7k=5(6k+3)-1 | | -2(3x-5)+10=7 | | 6x^2y^2z^2-xyz-5=0 | | 0=v^2+6v+9 | | 8x+28=-47+3x | | -32+7k=(6k+3)-1 | | 7x+10=-8x-18 | | -82+-88= | | 6a^2b^2+11abc+4c^2=0 | | 17p-p= | | 10.5x=630 |