Question

sa se rezolve in R inecuatia: a)2x<3x+6; b)3-2x>7x-2..............ajutati-ma va rog:)

Answer 1

a.      - 6   < 3x - 2x   in R 
x > - 6    ⇒   x ∈ ( - 6 , + ∞ ) 
b.   3 + 2 > 7x + 2x 
      9x  < 5 
       x < 5 / 9 
         x  ∈ ( - ∞   ; 5/ 9 ) 

Answer 2

[tex]a) 2x\ \textless \ 3x+6 \\ 2x-3x\ \textless \ 6 \\ -x\ \textless \ 6 \\ x\ \textgreater \ -6 \\ x -apartine-(-6; +infinit) \\ b) 3-2x\ \textgreater \ 7x-2 \\ -2x-7x\ \textgreater \ -2-3 \\ -9x\ \textgreater \ -5 \\ x\ \textless \ \frac{5}{9} \\ x-apartine-(-infinit;\frac{5}{9})[/tex]