Question

ai lm được giúp ik

Answer 1

a: =>\(\left(\dfrac{x+2001}{2016}-1\right)+\left(\dfrac{x+2003}{2018}+1\right)>\left(\dfrac{x+2002}{2017}-1\right)+\left(\dfrac{x+2004}{2019}-1\right)\)

=>(x-15)(1/2016+1/2018-1/2017-1/2015)>0

=>x-15<0

=>x<15

b: \(\Leftrightarrow\left(\dfrac{x-2006}{4}-3\right)+\left(\dfrac{x-2113}{19}+5\right)< \left(\dfrac{x-2023}{5}+1\right)+\left(\dfrac{x-2048}{30}+1\right)\)

=>\(\left(x-2018\right)\left(\dfrac{1}{4}+\dfrac{1}{19}-\dfrac{1}{5}-\dfrac{1}{30}\right)< 0\)

=>x-2018<0

=>x<2018