Question

calculati in R inecuatiile : 2x-5<0 si -3x+4<0

Answer 1

2x-5<0=>x<5/2=>x<2,5
    
-3x+4<0=>3x>4=>x>4/3

Answer 2

$\displaystyle a).2x-5\ \textless \ 0 \\ 2x\ \textless \ 0+5 \\ 2x\ \textless \ 5 \\ x\ \textless \ \frac{5}{2} \\ b).-3x+4=0 \\ -3x=0-4 \\ -3x=-4 \\ x= \frac{4}{3}$